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Finding the Fourth Proportional to 543,392.87, 814,028.98 and 355,835.75

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Solution

The fourth proportional to 543,392.87, 814,028.98 and 355,835.75 is: 533,059.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,392.87 : 814,028.98 = 355,835.75 : x
  2. Step 2: Convert to fraction form
    543,392.87/814,028.98 = 355,835.75/x
  3. Step 3: Cross multiply
    543,392.87x = 814,028.98 × 355,835.75
  4. Step 4: Simplify right side
    543,392.87x = 289,660,612,620.04
  5. Step 5: Solve for x
    x = 289,660,612,620.04/543,392.87
  6. Step 6: Final answer
    x = 533,059.28

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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.