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Finding the Third Proportional to 3,921,385.50 and 8,615,997

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Solution

The third proportional to 3,921,385.50 and 8,615,997 is: 18,930,912.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921,385.50 : 8,615,997 = 8,615,997 : x
  2. Step 2: Convert to fraction form
    3,921,385.50/8,615,997 = 8,615,997/x
  3. Step 3: Cross multiply
    3,921,385.50x = 8,615,997 × 8,615,997
  4. Step 4: Simplify right side
    3,921,385.50x = 74,235,404,304,009
  5. Step 5: Solve for x
    x = 74,235,404,304,009/3,921,385.50
  6. Step 6: Final answer
    x = 18,930,912.12

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.