Home / 398,732.20-598,424.70-395,621.80

Finding the Fourth Proportional to 398,732.20, 598,424.70 and 395,621.80

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Solution

The fourth proportional to 398,732.20, 598,424.70 and 395,621.80 is: 593,756.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,732.20 : 598,424.70 = 395,621.80 : x
  2. Step 2: Convert to fraction form
    398,732.20/598,424.70 = 395,621.80/x
  3. Step 3: Cross multiply
    398,732.20x = 598,424.70 × 395,621.80
  4. Step 4: Simplify right side
    398,732.20x = 236,749,856,978.46
  5. Step 5: Solve for x
    x = 236,749,856,978.46/398,732.20
  6. Step 6: Final answer
    x = 593,756.55

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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.