Home / 724,815.20-1,087,222.80-659,496.80

Finding the Fourth Proportional to 724,815.20, 1,087,222.80 and 659,496.80

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Solution

The fourth proportional to 724,815.20, 1,087,222.80 and 659,496.80 is: 989,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,815.20 : 1,087,222.80 = 659,496.80 : x
  2. Step 2: Convert to fraction form
    724,815.20/1,087,222.80 = 659,496.80/x
  3. Step 3: Cross multiply
    724,815.20x = 1,087,222.80 × 659,496.80
  4. Step 4: Simplify right side
    724,815.20x = 717,019,957,487.04
  5. Step 5: Solve for x
    x = 717,019,957,487.04/724,815.20
  6. Step 6: Final answer
    x = 989,245.20

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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.