[williamjohn]

Page rank depends on popularity, backlink and website updation, etc. So have a website with unique content and build quality backlink to improve your page rank.

[kabirthapar]

The Page rank is not updating my friend. Last page rank was updated 2 years before.

[superpower]

Build quality back-links and generate traffic on your website it may be helpful for you to increase your website's page rank. But now are the days google not displaying the page rank to the public, they calculate automatically inside. 

[SEO]

Superpower is right about that, I think. It's not displayed publicly anymore, but I think it exists inside of the algorithms (as one of them)!

[swapna8]

Quality backlinks help to improve the page rank and forum submission is also.

[durga]

get start quality link building  and wait for a few months