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Finding the Third Proportional to 3,326,780 and 7,218,217

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Solution

The third proportional to 3,326,780 and 7,218,217 is: 15,661,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326,780 : 7,218,217 = 7,218,217 : x
  2. Step 2: Convert to fraction form
    3,326,780/7,218,217 = 7,218,217/x
  3. Step 3: Cross multiply
    3,326,780x = 7,218,217 × 7,218,217
  4. Step 4: Simplify right side
    3,326,780x = 52,102,656,659,089
  5. Step 5: Solve for x
    x = 52,102,656,659,089/3,326,780
  6. Step 6: Final answer
    x = 15,661,587.68

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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.