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Finding the Third Proportional to 8,978,431 and 19,217,438

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Solution

The third proportional to 8,978,431 and 19,217,438 is: 41,133,013.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978,431 : 19,217,438 = 19,217,438 : x
  2. Step 2: Convert to fraction form
    8,978,431/19,217,438 = 19,217,438/x
  3. Step 3: Cross multiply
    8,978,431x = 19,217,438 × 19,217,438
  4. Step 4: Simplify right side
    8,978,431x = 369,309,923,283,844
  5. Step 5: Solve for x
    x = 369,309,923,283,844/8,978,431
  6. Step 6: Final answer
    x = 41,133,013.47

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Why These Related Problems?

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