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Finding the Fourth Proportional to 394,630.80, 591,989.40 and 382,189.20

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Solution

The fourth proportional to 394,630.80, 591,989.40 and 382,189.20 is: 573,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,630.80 : 591,989.40 = 382,189.20 : x
  2. Step 2: Convert to fraction form
    394,630.80/591,989.40 = 382,189.20/x
  3. Step 3: Cross multiply
    394,630.80x = 591,989.40 × 382,189.20
  4. Step 4: Simplify right side
    394,630.80x = 226,251,955,194.48
  5. Step 5: Solve for x
    x = 226,251,955,194.48/394,630.80
  6. Step 6: Final answer
    x = 573,325.64

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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.