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Finding the Third Proportional to 320,234 and 689,950

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Solution

The third proportional to 320,234 and 689,950 is: 1,486,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,234 : 689,950 = 689,950 : x
  2. Step 2: Convert to fraction form
    320,234/689,950 = 689,950/x
  3. Step 3: Cross multiply
    320,234x = 689,950 × 689,950
  4. Step 4: Simplify right side
    320,234x = 476,031,002,500
  5. Step 5: Solve for x
    x = 476,031,002,500/320,234
  6. Step 6: Final answer
    x = 1,486,509.87

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.