Step 1:
The first step to converting 448421.1288574 to a fraction is to re-write 448421.1288574 in the form p/q where p and q are both positive integers. To start with, 448421.1288574 can be written as simply 448421.1288574/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 448421.1288574, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 448421.1288574/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 448421.1288574/1 each by 10000000:
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 448421.1288574 as a fraction:
448421/1 / 1