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Finding the Fourth Proportional to 638,184.54, 880,694.68 and 351,704.64

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Solution

The fourth proportional to 638,184.54, 880,694.68 and 351,704.64 is: 485,352.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,184.54 : 880,694.68 = 351,704.64 : x
  2. Step 2: Convert to fraction form
    638,184.54/880,694.68 = 351,704.64/x
  3. Step 3: Cross multiply
    638,184.54x = 880,694.68 × 351,704.64
  4. Step 4: Simplify right side
    638,184.54x = 309,744,405,379.32
  5. Step 5: Solve for x
    x = 309,744,405,379.32/638,184.54
  6. Step 6: Final answer
    x = 485,352.41

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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.