Home / 766,821.20-1,150,231.80-205,912.40

Finding the Fourth Proportional to 766,821.20, 1,150,231.80 and 205,912.40

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Solution

The fourth proportional to 766,821.20, 1,150,231.80 and 205,912.40 is: 308,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,821.20 : 1,150,231.80 = 205,912.40 : x
  2. Step 2: Convert to fraction form
    766,821.20/1,150,231.80 = 205,912.40/x
  3. Step 3: Cross multiply
    766,821.20x = 1,150,231.80 × 205,912.40
  4. Step 4: Simplify right side
    766,821.20x = 236,846,990,494.32
  5. Step 5: Solve for x
    x = 236,846,990,494.32/766,821.20
  6. Step 6: Final answer
    x = 308,868.60

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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.