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Finding the Fourth Proportional to 578,860.80, 868,291.20 and 527,251.20

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Solution

The fourth proportional to 578,860.80, 868,291.20 and 527,251.20 is: 790,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,860.80 : 868,291.20 = 527,251.20 : x
  2. Step 2: Convert to fraction form
    578,860.80/868,291.20 = 527,251.20/x
  3. Step 3: Cross multiply
    578,860.80x = 868,291.20 × 527,251.20
  4. Step 4: Simplify right side
    578,860.80x = 457,807,577,149.44
  5. Step 5: Solve for x
    x = 457,807,577,149.44/578,860.80
  6. Step 6: Final answer
    x = 790,876.80

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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.