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Finding the Fourth Proportional to 617,677.30, 852,388.73 and 355,936.44

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Solution

The fourth proportional to 617,677.30, 852,388.73 and 355,936.44 is: 491,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,677.30 : 852,388.73 = 355,936.44 : x
  2. Step 2: Convert to fraction form
    617,677.30/852,388.73 = 355,936.44/x
  3. Step 3: Cross multiply
    617,677.30x = 852,388.73 × 355,936.44
  4. Step 4: Simplify right side
    617,677.30x = 303,396,208,272.64
  5. Step 5: Solve for x
    x = 303,396,208,272.64/617,677.30
  6. Step 6: Final answer
    x = 491,188.86

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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.