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Finding the Third Proportional to 418,336 and 628,458

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Solution

The third proportional to 418,336 and 628,458 is: 944,120.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,336 : 628,458 = 628,458 : x
  2. Step 2: Convert to fraction form
    418,336/628,458 = 628,458/x
  3. Step 3: Cross multiply
    418,336x = 628,458 × 628,458
  4. Step 4: Simplify right side
    418,336x = 394,959,457,764
  5. Step 5: Solve for x
    x = 394,959,457,764/418,336
  6. Step 6: Final answer
    x = 944,120.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.