Finding the Fourth Proportional to 907,918,986.80, 1,359,008,698.80 and 649,638,660.80
Calculator
Solution
The fourth proportional to 907,918,986.80, 1,359,008,698.80 and 649,638,660.80 is: 972,404,591.09
Step by Step Solution
- Step 1: Write the proportion equation
907,918,986.80 : 1,359,008,698.80 = 649,638,660.80 : x - Step 2: Convert to fraction form
907,918,986.80/1,359,008,698.80 = 649,638,660.80/x - Step 3: Cross multiply
907,918,986.80x = 1,359,008,698.80 × 649,638,660.80 - Step 4: Simplify right side
907,918,986.80x = 882,864,591,103,982,464 - Step 5: Solve for x
x = 882,864,591,103,982,464/907,918,986.80 - Step 6: Final answer
x = 972,404,591.09
Related Problems
Find fourth proportional to 453,959,493.40, 679,504,349.40 and 324,819,330.40
Half scale
Find fourth proportional to 1,815,837,973.60, 2,718,017,397.60 and 1,299,277,321.60
Double scale
Find fourth proportional to 907,918,987.80, 1,359,008,700.30 and 649,638,661.80
Similar ratio
Find fourth proportional to 1,361,878,480.20, 2,038,513,048.20 and 974,457,991.20
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.