Home / 398,442.20-597,989.70-395,331.80

Finding the Fourth Proportional to 398,442.20, 597,989.70 and 395,331.80

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Solution

The fourth proportional to 398,442.20, 597,989.70 and 395,331.80 is: 593,321.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,442.20 : 597,989.70 = 395,331.80 : x
  2. Step 2: Convert to fraction form
    398,442.20/597,989.70 = 395,331.80/x
  3. Step 3: Cross multiply
    398,442.20x = 597,989.70 × 395,331.80
  4. Step 4: Simplify right side
    398,442.20x = 236,404,344,482.46
  5. Step 5: Solve for x
    x = 236,404,344,482.46/398,442.20
  6. Step 6: Final answer
    x = 593,321.55

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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.