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Finding the Third Proportional to 330,996 and 511,474

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Solution

The third proportional to 330,996 and 511,474 is: 790,358.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,996 : 511,474 = 511,474 : x
  2. Step 2: Convert to fraction form
    330,996/511,474 = 511,474/x
  3. Step 3: Cross multiply
    330,996x = 511,474 × 511,474
  4. Step 4: Simplify right side
    330,996x = 261,605,652,676
  5. Step 5: Solve for x
    x = 261,605,652,676/330,996
  6. Step 6: Final answer
    x = 790,358.96

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.