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Finding the Third Proportional to 386,831 and 591,366

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Solution

The third proportional to 386,831 and 591,366 is: 904,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,831 : 591,366 = 591,366 : x
  2. Step 2: Convert to fraction form
    386,831/591,366 = 591,366/x
  3. Step 3: Cross multiply
    386,831x = 591,366 × 591,366
  4. Step 4: Simplify right side
    386,831x = 349,713,745,956
  5. Step 5: Solve for x
    x = 349,713,745,956/386,831
  6. Step 6: Final answer
    x = 904,047.88

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.