Finding the Fourth Proportional to 716,442.99, 988,691.33 and 394,146.17
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Solution
The fourth proportional to 716,442.99, 988,691.33 and 394,146.17 is: 543,921.71
Step by Step Solution
- Step 1: Write the proportion equation
716,442.99 : 988,691.33 = 394,146.17 : x - Step 2: Convert to fraction form
716,442.99/988,691.33 = 394,146.17/x - Step 3: Cross multiply
716,442.99x = 988,691.33 × 394,146.17 - Step 4: Simplify right side
716,442.99x = 389,688,894,117.52 - Step 5: Solve for x
x = 389,688,894,117.52/716,442.99 - Step 6: Final answer
x = 543,921.71
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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.