Home / 815,480.80-1,223,221.20-496,616.20

Finding the Fourth Proportional to 815,480.80, 1,223,221.20 and 496,616.20

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Solution

The fourth proportional to 815,480.80, 1,223,221.20 and 496,616.20 is: 744,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,480.80 : 1,223,221.20 = 496,616.20 : x
  2. Step 2: Convert to fraction form
    815,480.80/1,223,221.20 = 496,616.20/x
  3. Step 3: Cross multiply
    815,480.80x = 1,223,221.20 × 496,616.20
  4. Step 4: Simplify right side
    815,480.80x = 607,471,464,103.44
  5. Step 5: Solve for x
    x = 607,471,464,103.44/815,480.80
  6. Step 6: Final answer
    x = 744,924.30

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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.