Home / 819,404.80-1,229,107.20-445,235.20

Finding the Fourth Proportional to 819,404.80, 1,229,107.20 and 445,235.20

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Solution

The fourth proportional to 819,404.80, 1,229,107.20 and 445,235.20 is: 667,852.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,404.80 : 1,229,107.20 = 445,235.20 : x
  2. Step 2: Convert to fraction form
    819,404.80/1,229,107.20 = 445,235.20/x
  3. Step 3: Cross multiply
    819,404.80x = 1,229,107.20 × 445,235.20
  4. Step 4: Simplify right side
    819,404.80x = 547,241,790,013.44
  5. Step 5: Solve for x
    x = 547,241,790,013.44/819,404.80
  6. Step 6: Final answer
    x = 667,852.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.