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Finding the Third Proportional to 320,805 and 696,249

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Solution

The third proportional to 320,805 and 696,249 is: 1,511,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,805 : 696,249 = 696,249 : x
  2. Step 2: Convert to fraction form
    320,805/696,249 = 696,249/x
  3. Step 3: Cross multiply
    320,805x = 696,249 × 696,249
  4. Step 4: Simplify right side
    320,805x = 484,762,670,001
  5. Step 5: Solve for x
    x = 484,762,670,001/320,805
  6. Step 6: Final answer
    x = 1,511,082.03

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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.