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Finding the Third Proportional to 3,908,261 and 8,489,315

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Solution

The third proportional to 3,908,261 and 8,489,315 is: 18,440,034.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908,261 : 8,489,315 = 8,489,315 : x
  2. Step 2: Convert to fraction form
    3,908,261/8,489,315 = 8,489,315/x
  3. Step 3: Cross multiply
    3,908,261x = 8,489,315 × 8,489,315
  4. Step 4: Simplify right side
    3,908,261x = 72,068,469,169,225
  5. Step 5: Solve for x
    x = 72,068,469,169,225/3,908,261
  6. Step 6: Final answer
    x = 18,440,034.88

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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.