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Finding the Third Proportional to 396,540,920 and 858,960,112

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Solution

The third proportional to 396,540,920 and 858,960,112 is: 1,860,621,279.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,540,920 : 858,960,112 = 858,960,112 : x
  2. Step 2: Convert to fraction form
    396,540,920/858,960,112 = 858,960,112/x
  3. Step 3: Cross multiply
    396,540,920x = 858,960,112 × 858,960,112
  4. Step 4: Simplify right side
    396,540,920x = 737,812,474,007,052,544
  5. Step 5: Solve for x
    x = 737,812,474,007,052,544/396,540,920
  6. Step 6: Final answer
    x = 1,860,621,279.66

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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.