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Finding the Third Proportional to 396,039.75 and 851,787.75

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Solution

The third proportional to 396,039.75 and 851,787.75 is: 1,831,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,039.75 : 851,787.75 = 851,787.75 : x
  2. Step 2: Convert to fraction form
    396,039.75/851,787.75 = 851,787.75/x
  3. Step 3: Cross multiply
    396,039.75x = 851,787.75 × 851,787.75
  4. Step 4: Simplify right side
    396,039.75x = 725,542,371,050.06
  5. Step 5: Solve for x
    x = 725,542,371,050.06/396,039.75
  6. Step 6: Final answer
    x = 1,831,993.81

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.