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Finding the Third Proportional to 8,638,619 and 18,904,366

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Solution

The third proportional to 8,638,619 and 18,904,366 is: 41,369,465.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638,619 : 18,904,366 = 18,904,366 : x
  2. Step 2: Convert to fraction form
    8,638,619/18,904,366 = 18,904,366/x
  3. Step 3: Cross multiply
    8,638,619x = 18,904,366 × 18,904,366
  4. Step 4: Simplify right side
    8,638,619x = 357,375,053,861,956
  5. Step 5: Solve for x
    x = 357,375,053,861,956/8,638,619
  6. Step 6: Final answer
    x = 41,369,465.87

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.