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Finding the Fourth Proportional to 680,995.82, 1,021,139.03 and 254,180.62

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Solution

The fourth proportional to 680,995.82, 1,021,139.03 and 254,180.62 is: 381,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,995.82 : 1,021,139.03 = 254,180.62 : x
  2. Step 2: Convert to fraction form
    680,995.82/1,021,139.03 = 254,180.62/x
  3. Step 3: Cross multiply
    680,995.82x = 1,021,139.03 × 254,180.62
  4. Step 4: Simplify right side
    680,995.82x = 259,553,751,751.60
  5. Step 5: Solve for x
    x = 259,553,751,751.60/680,995.82
  6. Step 6: Final answer
    x = 381,138.54

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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.