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Finding the Fourth Proportional to 654,469.12, 903,162.88 and 371,845.12

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Solution

The fourth proportional to 654,469.12, 903,162.88 and 371,845.12 is: 513,143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,469.12 : 903,162.88 = 371,845.12 : x
  2. Step 2: Convert to fraction form
    654,469.12/903,162.88 = 371,845.12/x
  3. Step 3: Cross multiply
    654,469.12x = 903,162.88 × 371,845.12
  4. Step 4: Simplify right side
    654,469.12x = 335,836,709,493.15
  5. Step 5: Solve for x
    x = 335,836,709,493.15/654,469.12
  6. Step 6: Final answer
    x = 513,143.71

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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.