Home / 398,524.38-597,120.88-279,983.50

Finding the Fourth Proportional to 398,524.38, 597,120.88 and 279,983.50

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Solution

The fourth proportional to 398,524.38, 597,120.88 and 279,983.50 is: 419,507.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,524.38 : 597,120.88 = 279,983.50 : x
  2. Step 2: Convert to fraction form
    398,524.38/597,120.88 = 279,983.50/x
  3. Step 3: Cross multiply
    398,524.38x = 597,120.88 × 279,983.50
  4. Step 4: Simplify right side
    398,524.38x = 167,183,993,905.48
  5. Step 5: Solve for x
    x = 167,183,993,905.48/398,524.38
  6. Step 6: Final answer
    x = 419,507.57

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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.