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Finding the Fourth Proportional to 674,251.21, 930,494.99 and 387,771.56

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Solution

The fourth proportional to 674,251.21, 930,494.99 and 387,771.56 is: 535,141.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,251.21 : 930,494.99 = 387,771.56 : x
  2. Step 2: Convert to fraction form
    674,251.21/930,494.99 = 387,771.56/x
  3. Step 3: Cross multiply
    674,251.21x = 930,494.99 × 387,771.56
  4. Step 4: Simplify right side
    674,251.21x = 360,819,493,844.48
  5. Step 5: Solve for x
    x = 360,819,493,844.48/674,251.21
  6. Step 6: Final answer
    x = 535,141.04

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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.