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Finding the Third Proportional to 409,338 and 631,503

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Solution

The third proportional to 409,338 and 631,503 is: 974,246.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,338 : 631,503 = 631,503 : x
  2. Step 2: Convert to fraction form
    409,338/631,503 = 631,503/x
  3. Step 3: Cross multiply
    409,338x = 631,503 × 631,503
  4. Step 4: Simplify right side
    409,338x = 398,796,039,009
  5. Step 5: Solve for x
    x = 398,796,039,009/409,338
  6. Step 6: Final answer
    x = 974,246.32

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.