Finding the Fourth Proportional to 905,414.76, 1,249,471.98 and 497,542.92
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Solution
The fourth proportional to 905,414.76, 1,249,471.98 and 497,542.92 is: 686,609.02
Step by Step Solution
- Step 1: Write the proportion equation
905,414.76 : 1,249,471.98 = 497,542.92 : x - Step 2: Convert to fraction form
905,414.76/1,249,471.98 = 497,542.92/x - Step 3: Cross multiply
905,414.76x = 1,249,471.98 × 497,542.92 - Step 4: Simplify right side
905,414.76x = 621,665,937,387.38 - Step 5: Solve for x
x = 621,665,937,387.38/905,414.76 - Step 6: Final answer
x = 686,609.02
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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.