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Finding the Fourth Proportional to 551,168,998.80, 826,753,498.20 and 486,598,917.30

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Solution

The fourth proportional to 551,168,998.80, 826,753,498.20 and 486,598,917.30 is: 729,898,375.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,168,998.80 : 826,753,498.20 = 486,598,917.30 : x
  2. Step 2: Convert to fraction form
    551,168,998.80/826,753,498.20 = 486,598,917.30/x
  3. Step 3: Cross multiply
    551,168,998.80x = 826,753,498.20 × 486,598,917.30
  4. Step 4: Simplify right side
    551,168,998.80x = 402,297,357,098,107,520
  5. Step 5: Solve for x
    x = 402,297,357,098,107,520/551,168,998.80
  6. Step 6: Final answer
    x = 729,898,375.95

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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.