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Finding the Fourth Proportional to 465,972,438.80, 698,958,658.20 and 437,251,005.20

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Solution

The fourth proportional to 465,972,438.80, 698,958,658.20 and 437,251,005.20 is: 655,876,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,972,438.80 : 698,958,658.20 = 437,251,005.20 : x
  2. Step 2: Convert to fraction form
    465,972,438.80/698,958,658.20 = 437,251,005.20/x
  3. Step 3: Cross multiply
    465,972,438.80x = 698,958,658.20 × 437,251,005.20
  4. Step 4: Simplify right side
    465,972,438.80x = 305,620,375,891,193,216
  5. Step 5: Solve for x
    x = 305,620,375,891,193,216/465,972,438.80
  6. Step 6: Final answer
    x = 655,876,507.80

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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.