Home / 398,831.20-598,246.80-327,972.40

Finding the Fourth Proportional to 398,831.20, 598,246.80 and 327,972.40

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Solution

The fourth proportional to 398,831.20, 598,246.80 and 327,972.40 is: 491,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,831.20 : 598,246.80 = 327,972.40 : x
  2. Step 2: Convert to fraction form
    398,831.20/598,246.80 = 327,972.40/x
  3. Step 3: Cross multiply
    398,831.20x = 598,246.80 × 327,972.40
  4. Step 4: Simplify right side
    398,831.20x = 196,208,438,788.32
  5. Step 5: Solve for x
    x = 196,208,438,788.32/398,831.20
  6. Step 6: Final answer
    x = 491,958.60

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Similar ratio
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1.5x scale

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.