Home / 684,775.80-1,027,163.70-329,704.20

Finding the Fourth Proportional to 684,775.80, 1,027,163.70 and 329,704.20

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Solution

The fourth proportional to 684,775.80, 1,027,163.70 and 329,704.20 is: 494,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,775.80 : 1,027,163.70 = 329,704.20 : x
  2. Step 2: Convert to fraction form
    684,775.80/1,027,163.70 = 329,704.20/x
  3. Step 3: Cross multiply
    684,775.80x = 1,027,163.70 × 329,704.20
  4. Step 4: Simplify right side
    684,775.80x = 338,660,185,977.54
  5. Step 5: Solve for x
    x = 338,660,185,977.54/684,775.80
  6. Step 6: Final answer
    x = 494,556.30

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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.