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Finding the Third Proportional to 330,992 and 511,468

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Solution

The third proportional to 330,992 and 511,468 is: 790,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,992 : 511,468 = 511,468 : x
  2. Step 2: Convert to fraction form
    330,992/511,468 = 511,468/x
  3. Step 3: Cross multiply
    330,992x = 511,468 × 511,468
  4. Step 4: Simplify right side
    330,992x = 261,599,515,024
  5. Step 5: Solve for x
    x = 261,599,515,024/330,992
  6. Step 6: Final answer
    x = 790,349.96

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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.