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Finding the Fourth Proportional to 641,715.52, 885,180 and 412,195.54

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Solution

The fourth proportional to 641,715.52, 885,180 and 412,195.54 is: 568,580.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,715.52 : 885,180 = 412,195.54 : x
  2. Step 2: Convert to fraction form
    641,715.52/885,180 = 412,195.54/x
  3. Step 3: Cross multiply
    641,715.52x = 885,180 × 412,195.54
  4. Step 4: Simplify right side
    641,715.52x = 364,867,248,097.20
  5. Step 5: Solve for x
    x = 364,867,248,097.20/641,715.52
  6. Step 6: Final answer
    x = 568,580.99

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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.