Home / 861,219.28-1,189,067.88-539,059.60

Finding the Fourth Proportional to 861,219.28, 1,189,067.88 and 539,059.60

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Solution

The fourth proportional to 861,219.28, 1,189,067.88 and 539,059.60 is: 744,268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,219.28 : 1,189,067.88 = 539,059.60 : x
  2. Step 2: Convert to fraction form
    861,219.28/1,189,067.88 = 539,059.60/x
  3. Step 3: Cross multiply
    861,219.28x = 1,189,067.88 × 539,059.60
  4. Step 4: Simplify right side
    861,219.28x = 640,978,455,765.65
  5. Step 5: Solve for x
    x = 640,978,455,765.65/861,219.28
  6. Step 6: Final answer
    x = 744,268.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.