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Finding the Third Proportional to 313,908 and 667,020

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Solution

The third proportional to 313,908 and 667,020 is: 1,417,344.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,908 : 667,020 = 667,020 : x
  2. Step 2: Convert to fraction form
    313,908/667,020 = 667,020/x
  3. Step 3: Cross multiply
    313,908x = 667,020 × 667,020
  4. Step 4: Simplify right side
    313,908x = 444,915,680,400
  5. Step 5: Solve for x
    x = 444,915,680,400/313,908
  6. Step 6: Final answer
    x = 1,417,344.19

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.