Home / 825,620.78-1,238,608.92-256,989.80

Finding the Fourth Proportional to 825,620.78, 1,238,608.92 and 256,989.80

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Solution

The fourth proportional to 825,620.78, 1,238,608.92 and 256,989.80 is: 385,540.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,620.78 : 1,238,608.92 = 256,989.80 : x
  2. Step 2: Convert to fraction form
    825,620.78/1,238,608.92 = 256,989.80/x
  3. Step 3: Cross multiply
    825,620.78x = 1,238,608.92 × 256,989.80
  4. Step 4: Simplify right side
    825,620.78x = 318,309,858,629.02
  5. Step 5: Solve for x
    x = 318,309,858,629.02/825,620.78
  6. Step 6: Final answer
    x = 385,540.03

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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.