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Finding the Fourth Proportional to 638,108, 880,585.26 and 347,719.04

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Solution

The fourth proportional to 638,108, 880,585.26 and 347,719.04 is: 479,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,108 : 880,585.26 = 347,719.04 : x
  2. Step 2: Convert to fraction form
    638,108/880,585.26 = 347,719.04/x
  3. Step 3: Cross multiply
    638,108x = 880,585.26 × 347,719.04
  4. Step 4: Simplify right side
    638,108x = 306,196,261,245.35
  5. Step 5: Solve for x
    x = 306,196,261,245.35/638,108
  6. Step 6: Final answer
    x = 479,850.22

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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.