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Finding the Fourth Proportional to 580,278.28, 800,578.74 and 379,190.92

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Solution

The fourth proportional to 580,278.28, 800,578.74 and 379,190.92 is: 523,149.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,278.28 : 800,578.74 = 379,190.92 : x
  2. Step 2: Convert to fraction form
    580,278.28/800,578.74 = 379,190.92/x
  3. Step 3: Cross multiply
    580,278.28x = 800,578.74 × 379,190.92
  4. Step 4: Simplify right side
    580,278.28x = 303,572,188,953.04
  5. Step 5: Solve for x
    x = 303,572,188,953.04/580,278.28
  6. Step 6: Final answer
    x = 523,149.32

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1.5x scale

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.