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Finding the Third Proportional to 393,846.75 and 434,448

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Solution

The third proportional to 393,846.75 and 434,448 is: 479,234.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,846.75 : 434,448 = 434,448 : x
  2. Step 2: Convert to fraction form
    393,846.75/434,448 = 434,448/x
  3. Step 3: Cross multiply
    393,846.75x = 434,448 × 434,448
  4. Step 4: Simplify right side
    393,846.75x = 188,745,064,704
  5. Step 5: Solve for x
    x = 188,745,064,704/393,846.75
  6. Step 6: Final answer
    x = 479,234.79

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.