Home / 718,255.08-991,198.44-395,976.54

Finding the Fourth Proportional to 718,255.08, 991,198.44 and 395,976.54

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Solution

The fourth proportional to 718,255.08, 991,198.44 and 395,976.54 is: 546,451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,255.08 : 991,198.44 = 395,976.54 : x
  2. Step 2: Convert to fraction form
    718,255.08/991,198.44 = 395,976.54/x
  3. Step 3: Cross multiply
    718,255.08x = 991,198.44 × 395,976.54
  4. Step 4: Simplify right side
    718,255.08x = 392,491,328,724.60
  5. Step 5: Solve for x
    x = 392,491,328,724.60/718,255.08
  6. Step 6: Final answer
    x = 546,451.17

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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.