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Finding the Fourth Proportional to 431,100.39, 645,546.48 and 359,845.87

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Solution

The fourth proportional to 431,100.39, 645,546.48 and 359,845.87 is: 538,847.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,100.39 : 645,546.48 = 359,845.87 : x
  2. Step 2: Convert to fraction form
    431,100.39/645,546.48 = 359,845.87/x
  3. Step 3: Cross multiply
    431,100.39x = 645,546.48 × 359,845.87
  4. Step 4: Simplify right side
    431,100.39x = 232,297,234,721.04
  5. Step 5: Solve for x
    x = 232,297,234,721.04/431,100.39
  6. Step 6: Final answer
    x = 538,847.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.