Home / 815,410.80-1,223,116.20-496,546.20

Finding the Fourth Proportional to 815,410.80, 1,223,116.20 and 496,546.20

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Solution

The fourth proportional to 815,410.80, 1,223,116.20 and 496,546.20 is: 744,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,410.80 : 1,223,116.20 = 496,546.20 : x
  2. Step 2: Convert to fraction form
    815,410.80/1,223,116.20 = 496,546.20/x
  3. Step 3: Cross multiply
    815,410.80x = 1,223,116.20 × 496,546.20
  4. Step 4: Simplify right side
    815,410.80x = 607,333,701,268.44
  5. Step 5: Solve for x
    x = 607,333,701,268.44/815,410.80
  6. Step 6: Final answer
    x = 744,819.30

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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.