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Finding the Third Proportional to 3,988,019 and 8,697,829

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Solution

The third proportional to 3,988,019 and 8,697,829 is: 18,969,876.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988,019 : 8,697,829 = 8,697,829 : x
  2. Step 2: Convert to fraction form
    3,988,019/8,697,829 = 8,697,829/x
  3. Step 3: Cross multiply
    3,988,019x = 8,697,829 × 8,697,829
  4. Step 4: Simplify right side
    3,988,019x = 75,652,229,313,241
  5. Step 5: Solve for x
    x = 75,652,229,313,241/3,988,019
  6. Step 6: Final answer
    x = 18,969,876.85

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.