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Finding the Fourth Proportional to 543,391.87, 814,027.48 and 355,834.75

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Solution

The fourth proportional to 543,391.87, 814,027.48 and 355,834.75 is: 533,057.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,391.87 : 814,027.48 = 355,834.75 : x
  2. Step 2: Convert to fraction form
    543,391.87/814,027.48 = 355,834.75/x
  3. Step 3: Cross multiply
    543,391.87x = 814,027.48 × 355,834.75
  4. Step 4: Simplify right side
    543,391.87x = 289,659,264,838.93
  5. Step 5: Solve for x
    x = 289,659,264,838.93/543,391.87
  6. Step 6: Final answer
    x = 533,057.78

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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.