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Finding the Fourth Proportional to 558,640.46, 838,376.42 and 274,483.55

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Solution

The fourth proportional to 558,640.46, 838,376.42 and 274,483.55 is: 411,929.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,640.46 : 838,376.42 = 274,483.55 : x
  2. Step 2: Convert to fraction form
    558,640.46/838,376.42 = 274,483.55/x
  3. Step 3: Cross multiply
    558,640.46x = 838,376.42 × 274,483.55
  4. Step 4: Simplify right side
    558,640.46x = 230,120,530,433.59
  5. Step 5: Solve for x
    x = 230,120,530,433.59/558,640.46
  6. Step 6: Final answer
    x = 411,929.58

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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.