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Finding the Fourth Proportional to 551,427,778.60, 827,141,667.90 and 491,162,369.20

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Solution

The fourth proportional to 551,427,778.60, 827,141,667.90 and 491,162,369.20 is: 736,743,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,427,778.60 : 827,141,667.90 = 491,162,369.20 : x
  2. Step 2: Convert to fraction form
    551,427,778.60/827,141,667.90 = 491,162,369.20/x
  3. Step 3: Cross multiply
    551,427,778.60x = 827,141,667.90 × 491,162,369.20
  4. Step 4: Simplify right side
    551,427,778.60x = 406,260,861,269,803,584
  5. Step 5: Solve for x
    x = 406,260,861,269,803,584/551,427,778.60
  6. Step 6: Final answer
    x = 736,743,553.80

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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.