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Finding the Fourth Proportional to 667,274.43, 920,839.20 and 361,353.22

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Solution

The fourth proportional to 667,274.43, 920,839.20 and 361,353.22 is: 498,667.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,274.43 : 920,839.20 = 361,353.22 : x
  2. Step 2: Convert to fraction form
    667,274.43/920,839.20 = 361,353.22/x
  3. Step 3: Cross multiply
    667,274.43x = 920,839.20 × 361,353.22
  4. Step 4: Simplify right side
    667,274.43x = 332,748,210,022.22
  5. Step 5: Solve for x
    x = 332,748,210,022.22/667,274.43
  6. Step 6: Final answer
    x = 498,667.71

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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.