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Finding the Fourth Proportional to 524,279.40, 785,835.90 and 287,791.80

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Solution

The fourth proportional to 524,279.40, 785,835.90 and 287,791.80 is: 431,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,279.40 : 785,835.90 = 287,791.80 : x
  2. Step 2: Convert to fraction form
    524,279.40/785,835.90 = 287,791.80/x
  3. Step 3: Cross multiply
    524,279.40x = 785,835.90 × 287,791.80
  4. Step 4: Simplify right side
    524,279.40x = 226,157,128,165.62
  5. Step 5: Solve for x
    x = 226,157,128,165.62/524,279.40
  6. Step 6: Final answer
    x = 431,367.57

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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.