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Finding the Fourth Proportional to 638,195.34, 880,687.24 and 347,801

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Solution

The fourth proportional to 638,195.34, 880,687.24 and 347,801 is: 479,953.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,195.34 : 880,687.24 = 347,801 : x
  2. Step 2: Convert to fraction form
    638,195.34/880,687.24 = 347,801/x
  3. Step 3: Cross multiply
    638,195.34x = 880,687.24 × 347,801
  4. Step 4: Simplify right side
    638,195.34x = 306,303,902,759.24
  5. Step 5: Solve for x
    x = 306,303,902,759.24/638,195.34
  6. Step 6: Final answer
    x = 479,953.21

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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.