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Finding the Third Proportional to 317,565 and 451,395

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Solution

The third proportional to 317,565 and 451,395 is: 641,624.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,565 : 451,395 = 451,395 : x
  2. Step 2: Convert to fraction form
    317,565/451,395 = 451,395/x
  3. Step 3: Cross multiply
    317,565x = 451,395 × 451,395
  4. Step 4: Simplify right side
    317,565x = 203,757,446,025
  5. Step 5: Solve for x
    x = 203,757,446,025/317,565
  6. Step 6: Final answer
    x = 641,624.38

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.