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Finding the Fourth Proportional to 521,595.30, 781,377.78 and 384,568.80

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Solution

The fourth proportional to 521,595.30, 781,377.78 and 384,568.80 is: 576,104.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,595.30 : 781,377.78 = 384,568.80 : x
  2. Step 2: Convert to fraction form
    521,595.30/781,377.78 = 384,568.80/x
  3. Step 3: Cross multiply
    521,595.30x = 781,377.78 × 384,568.80
  4. Step 4: Simplify right side
    521,595.30x = 300,493,515,201.26
  5. Step 5: Solve for x
    x = 300,493,515,201.26/521,595.30
  6. Step 6: Final answer
    x = 576,104.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.