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Finding the Third Proportional to 8,315,864 and 12,439,812

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Solution

The third proportional to 8,315,864 and 12,439,812 is: 18,608,880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315,864 : 12,439,812 = 12,439,812 : x
  2. Step 2: Convert to fraction form
    8,315,864/12,439,812 = 12,439,812/x
  3. Step 3: Cross multiply
    8,315,864x = 12,439,812 × 12,439,812
  4. Step 4: Simplify right side
    8,315,864x = 154,748,922,595,344
  5. Step 5: Solve for x
    x = 154,748,922,595,344/8,315,864
  6. Step 6: Final answer
    x = 18,608,880.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.