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Finding the Third Proportional to 318,448 and 452,728

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Solution

The third proportional to 318,448 and 452,728 is: 643,629.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,448 : 452,728 = 452,728 : x
  2. Step 2: Convert to fraction form
    318,448/452,728 = 452,728/x
  3. Step 3: Cross multiply
    318,448x = 452,728 × 452,728
  4. Step 4: Simplify right side
    318,448x = 204,962,641,984
  5. Step 5: Solve for x
    x = 204,962,641,984/318,448
  6. Step 6: Final answer
    x = 643,629.86

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.