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Finding the Third Proportional to 396,434 and 855,076

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Solution

The third proportional to 396,434 and 855,076 is: 1,844,329.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,434 : 855,076 = 855,076 : x
  2. Step 2: Convert to fraction form
    396,434/855,076 = 855,076/x
  3. Step 3: Cross multiply
    396,434x = 855,076 × 855,076
  4. Step 4: Simplify right side
    396,434x = 731,154,965,776
  5. Step 5: Solve for x
    x = 731,154,965,776/396,434
  6. Step 6: Final answer
    x = 1,844,329.61

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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.