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Finding the Third Proportional to 396,455.25 and 603,977.25

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Solution

The third proportional to 396,455.25 and 603,977.25 is: 920,125.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,455.25 : 603,977.25 = 603,977.25 : x
  2. Step 2: Convert to fraction form
    396,455.25/603,977.25 = 603,977.25/x
  3. Step 3: Cross multiply
    396,455.25x = 603,977.25 × 603,977.25
  4. Step 4: Simplify right side
    396,455.25x = 364,788,518,517.56
  5. Step 5: Solve for x
    x = 364,788,518,517.56/396,455.25
  6. Step 6: Final answer
    x = 920,125.33

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.