Step 1:
The first step to converting 458649748.3689 to a fraction is to re-write 458649748.3689 in the form p/q where p and q are both positive integers. To start with, 458649748.3689 can be written as simply 458649748.3689/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 458649748.3689, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 458649748.3689/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 458649748.3689/1 each by 10000:
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 458649748.3689 as a fraction:
458649748/1 / 1