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Finding the Third Proportional to 396,540,918 and 858,960,107

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Solution

The third proportional to 396,540,918 and 858,960,107 is: 1,860,621,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,540,918 : 858,960,107 = 858,960,107 : x
  2. Step 2: Convert to fraction form
    396,540,918/858,960,107 = 858,960,107/x
  3. Step 3: Cross multiply
    396,540,918x = 858,960,107 × 858,960,107
  4. Step 4: Simplify right side
    396,540,918x = 737,812,465,417,451,392
  5. Step 5: Solve for x
    x = 737,812,465,417,451,392/396,540,918
  6. Step 6: Final answer
    x = 1,860,621,267.38

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.