The dialogue is aimed at bolstering their influence over the region against China's expanding presence.
The dialogue has been termed the first official meeting on the Indo-Pacific.
Resurrecting the quadrilateral: Key goals laid down in first meeting
Representatives from India, Japan, Australia and the US agreed to mutual goals for the future of the Indo-Pacific.
They discussed enhancing cooperation based on "a converging vision of peace and prosperity" and "maintaining a rules-based order" in the region.
The discussions also revolved around addressing the North Korea crisis, enhancing connectivity and countering the threat from terrorism.
Do you know?
What is the Indo-Pacific?
There is no clear consensus what constitutes the Indo-Pacific. It's generally regarded as the region stretching from the Indian Ocean until the western and central Pacific Ocean. In recent times, the region has played host to dynamic events, including the rise of ISIS and China.
From Asia-Pacific to Indo-Pacific
In recent times, the Trump administration has been highlighting a "vision for Indo-Pacific co-operation", a departure from US policy focus on Asia-Pacific.
Analysts believe that this is being done to enhance India's role in the region, while also excluding China from the Asia-Pacific construct.
An unhappy China seems determined to ensure an "Asian" future and views the Asia-Pacific as its domain.