Home / 420,496.20-580,471.38-284,727.24

Finding the Fourth Proportional to 420,496.20, 580,471.38 and 284,727.24

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Solution

The fourth proportional to 420,496.20, 580,471.38 and 284,727.24 is: 393,049.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,496.20 : 580,471.38 = 284,727.24 : x
  2. Step 2: Convert to fraction form
    420,496.20/580,471.38 = 284,727.24/x
  3. Step 3: Cross multiply
    420,496.20x = 580,471.38 × 284,727.24
  4. Step 4: Simplify right side
    420,496.20x = 165,276,013,926.39
  5. Step 5: Solve for x
    x = 165,276,013,926.39/420,496.20
  6. Step 6: Final answer
    x = 393,049.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.