Home / 807,520.80-1,211,281.20-491,815.20

Finding the Fourth Proportional to 807,520.80, 1,211,281.20 and 491,815.20

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Solution

The fourth proportional to 807,520.80, 1,211,281.20 and 491,815.20 is: 737,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,520.80 : 1,211,281.20 = 491,815.20 : x
  2. Step 2: Convert to fraction form
    807,520.80/1,211,281.20 = 491,815.20/x
  3. Step 3: Cross multiply
    807,520.80x = 1,211,281.20 × 491,815.20
  4. Step 4: Simplify right side
    807,520.80x = 595,726,505,634.24
  5. Step 5: Solve for x
    x = 595,726,505,634.24/807,520.80
  6. Step 6: Final answer
    x = 737,722.80

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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.