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Finding the Fourth Proportional to 432,831.60, 649,247.40 and 327,855.60

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Solution

The fourth proportional to 432,831.60, 649,247.40 and 327,855.60 is: 491,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,831.60 : 649,247.40 = 327,855.60 : x
  2. Step 2: Convert to fraction form
    432,831.60/649,247.40 = 327,855.60/x
  3. Step 3: Cross multiply
    432,831.60x = 649,247.40 × 327,855.60
  4. Step 4: Simplify right side
    432,831.60x = 212,859,395,875.44
  5. Step 5: Solve for x
    x = 212,859,395,875.44/432,831.60
  6. Step 6: Final answer
    x = 491,783.40

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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.