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Finding the Third Proportional to 3,890,430 and 8,380,098

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Solution

The third proportional to 3,890,430 and 8,380,098 is: 18,050,971.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890,430 : 8,380,098 = 8,380,098 : x
  2. Step 2: Convert to fraction form
    3,890,430/8,380,098 = 8,380,098/x
  3. Step 3: Cross multiply
    3,890,430x = 8,380,098 × 8,380,098
  4. Step 4: Simplify right side
    3,890,430x = 70,226,042,489,604
  5. Step 5: Solve for x
    x = 70,226,042,489,604/3,890,430
  6. Step 6: Final answer
    x = 18,050,971.87

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.