Home / 398,738.20-598,433.70-395,627.80

Finding the Fourth Proportional to 398,738.20, 598,433.70 and 395,627.80

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Solution

The fourth proportional to 398,738.20, 598,433.70 and 395,627.80 is: 593,765.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,738.20 : 598,433.70 = 395,627.80 : x
  2. Step 2: Convert to fraction form
    398,738.20/598,433.70 = 395,627.80/x
  3. Step 3: Cross multiply
    398,738.20x = 598,433.70 × 395,627.80
  4. Step 4: Simplify right side
    398,738.20x = 236,757,008,176.86
  5. Step 5: Solve for x
    x = 236,757,008,176.86/398,738.20
  6. Step 6: Final answer
    x = 593,765.55

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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.