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Finding the Third Proportional to 331,992 and 720,279

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Solution

The third proportional to 331,992 and 720,279 is: 1,562,693.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,992 : 720,279 = 720,279 : x
  2. Step 2: Convert to fraction form
    331,992/720,279 = 720,279/x
  3. Step 3: Cross multiply
    331,992x = 720,279 × 720,279
  4. Step 4: Simplify right side
    331,992x = 518,801,837,841
  5. Step 5: Solve for x
    x = 518,801,837,841/331,992
  6. Step 6: Final answer
    x = 1,562,693.79

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.