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Finding the Fourth Proportional to 580,309.28, 800,621.50 and 379,221.92

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Solution

The fourth proportional to 580,309.28, 800,621.50 and 379,221.92 is: 523,192.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,309.28 : 800,621.50 = 379,221.92 : x
  2. Step 2: Convert to fraction form
    580,309.28/800,621.50 = 379,221.92/x
  3. Step 3: Cross multiply
    580,309.28x = 800,621.50 × 379,221.92
  4. Step 4: Simplify right side
    580,309.28x = 303,613,222,423.28
  5. Step 5: Solve for x
    x = 303,613,222,423.28/580,309.28
  6. Step 6: Final answer
    x = 523,192.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.