Home / 714,167.20-985,517.68-391,869.28

Finding the Fourth Proportional to 714,167.20, 985,517.68 and 391,869.28

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Solution

The fourth proportional to 714,167.20, 985,517.68 and 391,869.28 is: 540,761.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,167.20 : 985,517.68 = 391,869.28 : x
  2. Step 2: Convert to fraction form
    714,167.20/985,517.68 = 391,869.28/x
  3. Step 3: Cross multiply
    714,167.20x = 985,517.68 × 391,869.28
  4. Step 4: Simplify right side
    714,167.20x = 386,194,103,688.87
  5. Step 5: Solve for x
    x = 386,194,103,688.87/714,167.20
  6. Step 6: Final answer
    x = 540,761.47

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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.