Home / 718,272.24-991,197.45-395,974.86

Finding the Fourth Proportional to 718,272.24, 991,197.45 and 395,974.86

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Solution

The fourth proportional to 718,272.24, 991,197.45 and 395,974.86 is: 546,435.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,272.24 : 991,197.45 = 395,974.86 : x
  2. Step 2: Convert to fraction form
    718,272.24/991,197.45 = 395,974.86/x
  3. Step 3: Cross multiply
    718,272.24x = 991,197.45 × 395,974.86
  4. Step 4: Simplify right side
    718,272.24x = 392,489,271,496.11
  5. Step 5: Solve for x
    x = 392,489,271,496.11/718,272.24
  6. Step 6: Final answer
    x = 546,435.25

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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.