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Finding the Third Proportional to 396,099 and 855,328.50

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Solution

The third proportional to 396,099 and 855,328.50 is: 1,846,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,099 : 855,328.50 = 855,328.50 : x
  2. Step 2: Convert to fraction form
    396,099/855,328.50 = 855,328.50/x
  3. Step 3: Cross multiply
    396,099x = 855,328.50 × 855,328.50
  4. Step 4: Simplify right side
    396,099x = 731,586,842,912.25
  5. Step 5: Solve for x
    x = 731,586,842,912.25/396,099
  6. Step 6: Final answer
    x = 1,846,979.78

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.