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Finding the Fourth Proportional to 617,679.81, 851,799.26 and 481,664.13

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Solution

The fourth proportional to 617,679.81, 851,799.26 and 481,664.13 is: 664,229.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,679.81 : 851,799.26 = 481,664.13 : x
  2. Step 2: Convert to fraction form
    617,679.81/851,799.26 = 481,664.13/x
  3. Step 3: Cross multiply
    617,679.81x = 851,799.26 × 481,664.13
  4. Step 4: Simplify right side
    617,679.81x = 410,281,147,512.46
  5. Step 5: Solve for x
    x = 410,281,147,512.46/617,679.81
  6. Step 6: Final answer
    x = 664,229.49

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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.