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Finding the Third Proportional to 279,366 and 432,484

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Solution

The third proportional to 279,366 and 432,484 is: 669,524.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,366 : 432,484 = 432,484 : x
  2. Step 2: Convert to fraction form
    279,366/432,484 = 432,484/x
  3. Step 3: Cross multiply
    279,366x = 432,484 × 432,484
  4. Step 4: Simplify right side
    279,366x = 187,042,410,256
  5. Step 5: Solve for x
    x = 187,042,410,256/279,366
  6. Step 6: Final answer
    x = 669,524.60

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.