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Finding the Third Proportional to 491,128 and 738,518

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Solution

The third proportional to 491,128 and 738,518 is: 1,110,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,128 : 738,518 = 738,518 : x
  2. Step 2: Convert to fraction form
    491,128/738,518 = 738,518/x
  3. Step 3: Cross multiply
    491,128x = 738,518 × 738,518
  4. Step 4: Simplify right side
    491,128x = 545,408,836,324
  5. Step 5: Solve for x
    x = 545,408,836,324/491,128
  6. Step 6: Final answer
    x = 1,110,522.79

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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.