Currency symbol only updating but not the amoount

BASE PRICE IS kept indian INR 600
In the home page or in featured items the Price remains the same only the foreign currency symbol changes
When the product is clicked then the amount is changed as per the foreign rate but why on the home page and on featured list base price remains 600
when we open category the amount does not change only the foreign currency symbol changes and keep the amount same as the base indian price

please check the attached pictures which are screen shot.
When choosing the USD or Euro Or GBP , its still shows the base indian rate and uses the currency symbol of other currencies

THE CURRENCY ONLY WORKS WHEN THE PRODUCT IS CLICKED AND

Attachment 2936
currency work only when the product is clicked
but in homepage or everywhere it show the base price until we do not click the product