Finding the Fourth Proportional to 718,253.10, 991,195.68 and 395,974.53
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Solution
The fourth proportional to 718,253.10, 991,195.68 and 395,974.53 is: 546,448.38
Step by Step Solution
- Step 1: Write the proportion equation
718,253.10 : 991,195.68 = 395,974.53 : x - Step 2: Convert to fraction form
718,253.10/991,195.68 = 395,974.53/x - Step 3: Cross multiply
718,253.10x = 991,195.68 × 395,974.53 - Step 4: Simplify right side
718,253.10x = 392,488,243,526.03 - Step 5: Solve for x
x = 392,488,243,526.03/718,253.10 - Step 6: Final answer
x = 546,448.38
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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.