Step 1:
The first step to converting 681489.81278525 to a fraction is to re-write 681489.81278525 in the form p/q where p and q are both positive integers. To start with, 681489.81278525 can be written as simply 681489.81278525/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 681489.81278525, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 681489.81278525/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 681489.81278525/1 each by 100000000:
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 681489.81278525 as a fraction:
681490/1 / 1