Home / 721,939.79-996,332.25-411,849.21

Finding the Fourth Proportional to 721,939.79, 996,332.25 and 411,849.21

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Solution

The fourth proportional to 721,939.79, 996,332.25 and 411,849.21 is: 568,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,939.79 : 996,332.25 = 411,849.21 : x
  2. Step 2: Convert to fraction form
    721,939.79/996,332.25 = 411,849.21/x
  3. Step 3: Cross multiply
    721,939.79x = 996,332.25 × 411,849.21
  4. Step 4: Simplify right side
    721,939.79x = 410,338,647,419.68
  5. Step 5: Solve for x
    x = 410,338,647,419.68/721,939.79
  6. Step 6: Final answer
    x = 568,383.48

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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.