Home / 545,944.20-818,916.30-280,223.70

Finding the Fourth Proportional to 545,944.20, 818,916.30 and 280,223.70

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Solution

The fourth proportional to 545,944.20, 818,916.30 and 280,223.70 is: 420,335.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,944.20 : 818,916.30 = 280,223.70 : x
  2. Step 2: Convert to fraction form
    545,944.20/818,916.30 = 280,223.70/x
  3. Step 3: Cross multiply
    545,944.20x = 818,916.30 × 280,223.70
  4. Step 4: Simplify right side
    545,944.20x = 229,479,755,576.31
  5. Step 5: Solve for x
    x = 229,479,755,576.31/545,944.20
  6. Step 6: Final answer
    x = 420,335.55

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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.