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Finding the Third Proportional to 4,129,870 and 8,857,436

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Solution

The third proportional to 4,129,870 and 8,857,436 is: 18,996,765.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,129,870 : 8,857,436 = 8,857,436 : x
  2. Step 2: Convert to fraction form
    4,129,870/8,857,436 = 8,857,436/x
  3. Step 3: Cross multiply
    4,129,870x = 8,857,436 × 8,857,436
  4. Step 4: Simplify right side
    4,129,870x = 78,454,172,494,096
  5. Step 5: Solve for x
    x = 78,454,172,494,096/4,129,870
  6. Step 6: Final answer
    x = 18,996,765.64

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These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.