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Finding the Fourth Proportional to 558,636.47, 838,370.42 and 274,479.56

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Solution

The fourth proportional to 558,636.47, 838,370.42 and 274,479.56 is: 411,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,636.47 : 838,370.42 = 274,479.56 : x
  2. Step 2: Convert to fraction form
    558,636.47/838,370.42 = 274,479.56/x
  3. Step 3: Cross multiply
    558,636.47x = 838,370.42 × 274,479.56
  4. Step 4: Simplify right side
    558,636.47x = 230,115,542,626.22
  5. Step 5: Solve for x
    x = 230,115,542,626.22/558,636.47
  6. Step 6: Final answer
    x = 411,923.59

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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.