Home / 718,231.08-991,161.89-395,934.10

Finding the Fourth Proportional to 718,231.08, 991,161.89 and 395,934.10

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Solution

The fourth proportional to 718,231.08, 991,161.89 and 395,934.10 is: 546,390.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,231.08 : 991,161.89 = 395,934.10 : x
  2. Step 2: Convert to fraction form
    718,231.08/991,161.89 = 395,934.10/x
  3. Step 3: Cross multiply
    718,231.08x = 991,161.89 × 395,934.10
  4. Step 4: Simplify right side
    718,231.08x = 392,434,790,871.45
  5. Step 5: Solve for x
    x = 392,434,790,871.45/718,231.08
  6. Step 6: Final answer
    x = 546,390.71

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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.