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Finding the Fourth Proportional to 800,086.80, 1,200,130.20 and 485,158.80

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Solution

The fourth proportional to 800,086.80, 1,200,130.20 and 485,158.80 is: 727,738.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,086.80 : 1,200,130.20 = 485,158.80 : x
  2. Step 2: Convert to fraction form
    800,086.80/1,200,130.20 = 485,158.80/x
  3. Step 3: Cross multiply
    800,086.80x = 1,200,130.20 × 485,158.80
  4. Step 4: Simplify right side
    800,086.80x = 582,253,727,675.76
  5. Step 5: Solve for x
    x = 582,253,727,675.76/800,086.80
  6. Step 6: Final answer
    x = 727,738.20

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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.