Finding the Fourth Proportional to 731,129.70, 1,006,715.98 and 639,975.54
Calculator
Solution
The fourth proportional to 731,129.70, 1,006,715.98 and 639,975.54 is: 881,202.89
Step by Step Solution
- Step 1: Write the proportion equation
731,129.70 : 1,006,715.98 = 639,975.54 : x - Step 2: Convert to fraction form
731,129.70/1,006,715.98 = 639,975.54/x - Step 3: Cross multiply
731,129.70x = 1,006,715.98 × 639,975.54 - Step 4: Simplify right side
731,129.70x = 644,273,602,927.13 - Step 5: Solve for x
x = 644,273,602,927.13/731,129.70 - Step 6: Final answer
x = 881,202.89
Related Problems
Find fourth proportional to 365,564.85, 503,357.99 and 319,987.77
Half scale
Find fourth proportional to 1,462,259.40, 2,013,431.96 and 1,279,951.08
Double scale
Find fourth proportional to 731,130.70, 1,006,717.36 and 639,976.54
Similar ratio
Find fourth proportional to 1,096,694.55, 1,510,073.97 and 959,963.31
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.