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Finding the Fourth Proportional to 667,727.21, 921,508.76 and 377,238.04

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Solution

The fourth proportional to 667,727.21, 921,508.76 and 377,238.04 is: 520,614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,727.21 : 921,508.76 = 377,238.04 : x
  2. Step 2: Convert to fraction form
    667,727.21/921,508.76 = 377,238.04/x
  3. Step 3: Cross multiply
    667,727.21x = 921,508.76 × 377,238.04
  4. Step 4: Simplify right side
    667,727.21x = 347,628,157,104.55
  5. Step 5: Solve for x
    x = 347,628,157,104.55/667,727.21
  6. Step 6: Final answer
    x = 520,614.03

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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.