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Finding the Third Proportional to 291,438,422 and 631,304,474

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Solution

The third proportional to 291,438,422 and 631,304,474 is: 1,367,511,312.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,438,422 : 631,304,474 = 631,304,474 : x
  2. Step 2: Convert to fraction form
    291,438,422/631,304,474 = 631,304,474/x
  3. Step 3: Cross multiply
    291,438,422x = 631,304,474 × 631,304,474
  4. Step 4: Simplify right side
    291,438,422x = 398,545,338,892,416,704
  5. Step 5: Solve for x
    x = 398,545,338,892,416,704/291,438,422
  6. Step 6: Final answer
    x = 1,367,511,312.19

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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.