Home / 718,231.20-991,162.06-395,934.22

Finding the Fourth Proportional to 718,231.20, 991,162.06 and 395,934.22

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Solution

The fourth proportional to 718,231.20, 991,162.06 and 395,934.22 is: 546,390.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,231.20 : 991,162.06 = 395,934.22 : x
  2. Step 2: Convert to fraction form
    718,231.20/991,162.06 = 395,934.22/x
  3. Step 3: Cross multiply
    718,231.20x = 991,162.06 × 395,934.22
  4. Step 4: Simplify right side
    718,231.20x = 392,434,977,119.69
  5. Step 5: Solve for x
    x = 392,434,977,119.69/718,231.20
  6. Step 6: Final answer
    x = 546,390.88

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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.