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Finding the Third Proportional to 393,859.13 and 859,003.31

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Solution

The third proportional to 393,859.13 and 859,003.31 is: 1,873,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,859.13 : 859,003.31 = 859,003.31 : x
  2. Step 2: Convert to fraction form
    393,859.13/859,003.31 = 859,003.31/x
  3. Step 3: Cross multiply
    393,859.13x = 859,003.31 × 859,003.31
  4. Step 4: Simplify right side
    393,859.13x = 737,886,690,885.97
  5. Step 5: Solve for x
    x = 737,886,690,885.97/393,859.13
  6. Step 6: Final answer
    x = 1,873,478.72

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.