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Finding the Fourth Proportional to 442,266.80, 663,400.20 and 408,052.40

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Solution

The fourth proportional to 442,266.80, 663,400.20 and 408,052.40 is: 612,078.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,266.80 : 663,400.20 = 408,052.40 : x
  2. Step 2: Convert to fraction form
    442,266.80/663,400.20 = 408,052.40/x
  3. Step 3: Cross multiply
    442,266.80x = 663,400.20 × 408,052.40
  4. Step 4: Simplify right side
    442,266.80x = 270,702,043,770.48
  5. Step 5: Solve for x
    x = 270,702,043,770.48/442,266.80
  6. Step 6: Final answer
    x = 612,078.60

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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.