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Finding the Fourth Proportional to 658,354,934.02, 987,751,926.96 and 437,895,398.38

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Solution

The fourth proportional to 658,354,934.02, 987,751,926.96 and 437,895,398.38 is: 656,989,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,354,934.02 : 987,751,926.96 = 437,895,398.38 : x
  2. Step 2: Convert to fraction form
    658,354,934.02/987,751,926.96 = 437,895,398.38/x
  3. Step 3: Cross multiply
    658,354,934.02x = 987,751,926.96 × 437,895,398.38
  4. Step 4: Simplify right side
    658,354,934.02x = 432,532,023,556,761,856
  5. Step 5: Solve for x
    x = 432,532,023,556,761,856/658,354,934.02
  6. Step 6: Final answer
    x = 656,989,112.11

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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.