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Finding the Fourth Proportional to 484,993.20, 727,489.80 and 272,416.80

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Solution

The fourth proportional to 484,993.20, 727,489.80 and 272,416.80 is: 408,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,993.20 : 727,489.80 = 272,416.80 : x
  2. Step 2: Convert to fraction form
    484,993.20/727,489.80 = 272,416.80/x
  3. Step 3: Cross multiply
    484,993.20x = 727,489.80 × 272,416.80
  4. Step 4: Simplify right side
    484,993.20x = 198,180,443,348.64
  5. Step 5: Solve for x
    x = 198,180,443,348.64/484,993.20
  6. Step 6: Final answer
    x = 408,625.20

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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.