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Finding the Third Proportional to 451,269 and 991,100

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Solution

The third proportional to 451,269 and 991,100 is: 2,176,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,269 : 991,100 = 991,100 : x
  2. Step 2: Convert to fraction form
    451,269/991,100 = 991,100/x
  3. Step 3: Cross multiply
    451,269x = 991,100 × 991,100
  4. Step 4: Simplify right side
    451,269x = 982,279,210,000
  5. Step 5: Solve for x
    x = 982,279,210,000/451,269
  6. Step 6: Final answer
    x = 2,176,704.38

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.