Home / 657,761.62-986,471.16-278,487.12

Finding the Fourth Proportional to 657,761.62, 986,471.16 and 278,487.12

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Solution

The fourth proportional to 657,761.62, 986,471.16 and 278,487.12 is: 417,658.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,761.62 : 986,471.16 = 278,487.12 : x
  2. Step 2: Convert to fraction form
    657,761.62/986,471.16 = 278,487.12/x
  3. Step 3: Cross multiply
    657,761.62x = 986,471.16 × 278,487.12
  4. Step 4: Simplify right side
    657,761.62x = 274,719,512,311.46
  5. Step 5: Solve for x
    x = 274,719,512,311.46/657,761.62
  6. Step 6: Final answer
    x = 417,658.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.