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Finding the Third Proportional to 438,759 and 663,539

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Solution

The third proportional to 438,759 and 663,539 is: 1,003,475.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,759 : 663,539 = 663,539 : x
  2. Step 2: Convert to fraction form
    438,759/663,539 = 663,539/x
  3. Step 3: Cross multiply
    438,759x = 663,539 × 663,539
  4. Step 4: Simplify right side
    438,759x = 440,284,004,521
  5. Step 5: Solve for x
    x = 440,284,004,521/438,759
  6. Step 6: Final answer
    x = 1,003,475.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.