Home / 398,664.78-597,331.46-280,123.91

Finding the Fourth Proportional to 398,664.78, 597,331.46 and 280,123.91

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Solution

The fourth proportional to 398,664.78, 597,331.46 and 280,123.91 is: 419,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,664.78 : 597,331.46 = 280,123.91 : x
  2. Step 2: Convert to fraction form
    398,664.78/597,331.46 = 280,123.91/x
  3. Step 3: Cross multiply
    398,664.78x = 597,331.46 × 280,123.91
  4. Step 4: Simplify right side
    398,664.78x = 167,326,824,141.21
  5. Step 5: Solve for x
    x = 167,326,824,141.21/398,664.78
  6. Step 6: Final answer
    x = 419,718.10

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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.