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Finding the Third Proportional to 307,109 and 664,522

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Solution

The third proportional to 307,109 and 664,522 is: 1,437,891.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,109 : 664,522 = 664,522 : x
  2. Step 2: Convert to fraction form
    307,109/664,522 = 664,522/x
  3. Step 3: Cross multiply
    307,109x = 664,522 × 664,522
  4. Step 4: Simplify right side
    307,109x = 441,589,488,484
  5. Step 5: Solve for x
    x = 441,589,488,484/307,109
  6. Step 6: Final answer
    x = 1,437,891.72

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.