Simple DAX Query not calculating correctly.

Hi,

I'm looking on for an answer why my DAX query isn't calcualtiing correctly. Currently this is the query I'm using, simply trying to calcualte utilization, i.e. realized/booked_to_run:

Utilization = DIVIDE(

SUMX('DW_H_POD', 'DW_H_POD'[billable_rate] * 'DW_H_POD'[hours]), SUM('DW_H_POD'[billable_rate])

)

However, I'm getting a completley differnt total. For example 

Realized is 35,285/14,440  and I'm getting 1.95 instead of 2.44. 

Any suggestions will be much appreciated. 

Thanks.