Home / 1,040,520.40-1,560,780.60-330,620.20

Finding the Fourth Proportional to 1,040,520.40, 1,560,780.60 and 330,620.20

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Solution

The fourth proportional to 1,040,520.40, 1,560,780.60 and 330,620.20 is: 495,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,520.40 : 1,560,780.60 = 330,620.20 : x
  2. Step 2: Convert to fraction form
    1,040,520.40/1,560,780.60 = 330,620.20/x
  3. Step 3: Cross multiply
    1,040,520.40x = 1,560,780.60 × 330,620.20
  4. Step 4: Simplify right side
    1,040,520.40x = 516,025,594,128.12
  5. Step 5: Solve for x
    x = 516,025,594,128.12/1,040,520.40
  6. Step 6: Final answer
    x = 495,930.30

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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.