Home / 800,928.20-1,201,392.30-486,000.20

Finding the Fourth Proportional to 800,928.20, 1,201,392.30 and 486,000.20

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Solution

The fourth proportional to 800,928.20, 1,201,392.30 and 486,000.20 is: 729,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,928.20 : 1,201,392.30 = 486,000.20 : x
  2. Step 2: Convert to fraction form
    800,928.20/1,201,392.30 = 486,000.20/x
  3. Step 3: Cross multiply
    800,928.20x = 1,201,392.30 × 486,000.20
  4. Step 4: Simplify right side
    800,928.20x = 583,876,898,078.46
  5. Step 5: Solve for x
    x = 583,876,898,078.46/800,928.20
  6. Step 6: Final answer
    x = 729,000.30

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Double scale
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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.