Step 1:
The first step to converting 311140.398748 to a fraction is to re-write 311140.398748 in the form p/q where p and q are both positive integers. To start with, 311140.398748 can be written as simply 311140.398748/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 311140.398748, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 311140.398748/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 311140.398748/1 each by 1000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 311140.398748 as a fraction:
622281/2 / 1