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Finding the Fourth Proportional to 467,840, 645,579.96 and 276,819.92

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Solution

The fourth proportional to 467,840, 645,579.96 and 276,819.92 is: 381,988.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,840 : 645,579.96 = 276,819.92 : x
  2. Step 2: Convert to fraction form
    467,840/645,579.96 = 276,819.92/x
  3. Step 3: Cross multiply
    467,840x = 645,579.96 × 276,819.92
  4. Step 4: Simplify right side
    467,840x = 178,709,392,880.80
  5. Step 5: Solve for x
    x = 178,709,392,880.80/467,840
  6. Step 6: Final answer
    x = 381,988.27

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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.