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Finding the Third Proportional to 392,731 and 604,406

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Solution

The third proportional to 392,731 and 604,406 is: 930,170.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,731 : 604,406 = 604,406 : x
  2. Step 2: Convert to fraction form
    392,731/604,406 = 604,406/x
  3. Step 3: Cross multiply
    392,731x = 604,406 × 604,406
  4. Step 4: Simplify right side
    392,731x = 365,306,612,836
  5. Step 5: Solve for x
    x = 365,306,612,836/392,731
  6. Step 6: Final answer
    x = 930,170.05

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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.