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Finding the Fourth Proportional to 521,080.70, 780,813.98 and 361,467.06

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Solution

The fourth proportional to 521,080.70, 780,813.98 and 361,467.06 is: 541,640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,080.70 : 780,813.98 = 361,467.06 : x
  2. Step 2: Convert to fraction form
    521,080.70/780,813.98 = 361,467.06/x
  3. Step 3: Cross multiply
    521,080.70x = 780,813.98 × 361,467.06
  4. Step 4: Simplify right side
    521,080.70x = 282,238,530,377.61
  5. Step 5: Solve for x
    x = 282,238,530,377.61/521,080.70
  6. Step 6: Final answer
    x = 541,640.73

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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.