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Finding the Third Proportional to 396,867.09 and 869,729.91

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Solution

The third proportional to 396,867.09 and 869,729.91 is: 1,906,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,867.09 : 869,729.91 = 869,729.91 : x
  2. Step 2: Convert to fraction form
    396,867.09/869,729.91 = 869,729.91/x
  3. Step 3: Cross multiply
    396,867.09x = 869,729.91 × 869,729.91
  4. Step 4: Simplify right side
    396,867.09x = 756,430,109,825.63
  5. Step 5: Solve for x
    x = 756,430,109,825.63/396,867.09
  6. Step 6: Final answer
    x = 1,906,003.60

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.