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Finding the Fourth Proportional to 519,121.90, 778,828.65 and 252,891.10

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Solution

The fourth proportional to 519,121.90, 778,828.65 and 252,891.10 is: 379,407.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,121.90 : 778,828.65 = 252,891.10 : x
  2. Step 2: Convert to fraction form
    519,121.90/778,828.65 = 252,891.10/x
  3. Step 3: Cross multiply
    519,121.90x = 778,828.65 × 252,891.10
  4. Step 4: Simplify right side
    519,121.90x = 196,958,834,010.02
  5. Step 5: Solve for x
    x = 196,958,834,010.02/519,121.90
  6. Step 6: Final answer
    x = 379,407.68

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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.