Home / 679,478.66-1,019,218.20-199,706.56

Finding the Fourth Proportional to 679,478.66, 1,019,218.20 and 199,706.56

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Solution

The fourth proportional to 679,478.66, 1,019,218.20 and 199,706.56 is: 299,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,478.66 : 1,019,218.20 = 199,706.56 : x
  2. Step 2: Convert to fraction form
    679,478.66/1,019,218.20 = 199,706.56/x
  3. Step 3: Cross multiply
    679,478.66x = 1,019,218.20 × 199,706.56
  4. Step 4: Simplify right side
    679,478.66x = 203,544,560,611.39
  5. Step 5: Solve for x
    x = 203,544,560,611.39/679,478.66
  6. Step 6: Final answer
    x = 299,559.90

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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.