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Finding the Fourth Proportional to 617,843.23, 852,583.25 and 345,908.61

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Solution

The fourth proportional to 617,843.23, 852,583.25 and 345,908.61 is: 477,331.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,843.23 : 852,583.25 = 345,908.61 : x
  2. Step 2: Convert to fraction form
    617,843.23/852,583.25 = 345,908.61/x
  3. Step 3: Cross multiply
    617,843.23x = 852,583.25 × 345,908.61
  4. Step 4: Simplify right side
    617,843.23x = 294,915,887,781.55
  5. Step 5: Solve for x
    x = 294,915,887,781.55/617,843.23
  6. Step 6: Final answer
    x = 477,331.26

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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.