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Finding the Fourth Proportional to 442,624.80, 663,937.20 and 408,410.40

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Solution

The fourth proportional to 442,624.80, 663,937.20 and 408,410.40 is: 612,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,624.80 : 663,937.20 = 408,410.40 : x
  2. Step 2: Convert to fraction form
    442,624.80/663,937.20 = 408,410.40/x
  3. Step 3: Cross multiply
    442,624.80x = 663,937.20 × 408,410.40
  4. Step 4: Simplify right side
    442,624.80x = 271,158,857,426.88
  5. Step 5: Solve for x
    x = 271,158,857,426.88/442,624.80
  6. Step 6: Final answer
    x = 612,615.60

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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.