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Finding the Third Proportional to 3,980,331 and 8,636,445

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Solution

The third proportional to 3,980,331 and 8,636,445 is: 18,739,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980,331 : 8,636,445 = 8,636,445 : x
  2. Step 2: Convert to fraction form
    3,980,331/8,636,445 = 8,636,445/x
  3. Step 3: Cross multiply
    3,980,331x = 8,636,445 × 8,636,445
  4. Step 4: Simplify right side
    3,980,331x = 74,588,182,238,025
  5. Step 5: Solve for x
    x = 74,588,182,238,025/3,980,331
  6. Step 6: Final answer
    x = 18,739,190.85

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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.