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Finding the Fourth Proportional to 396,951,906.60, 595,427,859.90 and 287,262,484.20

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Solution

The fourth proportional to 396,951,906.60, 595,427,859.90 and 287,262,484.20 is: 430,893,726.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,951,906.60 : 595,427,859.90 = 287,262,484.20 : x
  2. Step 2: Convert to fraction form
    396,951,906.60/595,427,859.90 = 287,262,484.20/x
  3. Step 3: Cross multiply
    396,951,906.60x = 595,427,859.90 × 287,262,484.20
  4. Step 4: Simplify right side
    396,951,906.60x = 171,044,086,196,763,552
  5. Step 5: Solve for x
    x = 171,044,086,196,763,552/396,951,906.60
  6. Step 6: Final answer
    x = 430,893,726.30

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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.