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Finding the Fourth Proportional to 617,086.52, 851,623 and 345,179.86

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Solution

The fourth proportional to 617,086.52, 851,623 and 345,179.86 is: 476,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,086.52 : 851,623 = 345,179.86 : x
  2. Step 2: Convert to fraction form
    617,086.52/851,623 = 345,179.86/x
  3. Step 3: Cross multiply
    617,086.52x = 851,623 × 345,179.86
  4. Step 4: Simplify right side
    617,086.52x = 293,963,107,912.78
  5. Step 5: Solve for x
    x = 293,963,107,912.78/617,086.52
  6. Step 6: Final answer
    x = 476,372.60

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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.