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Finding the Fourth Proportional to 504,974.82, 696,879.83 and 278,634.90

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Solution

The fourth proportional to 504,974.82, 696,879.83 and 278,634.90 is: 384,524.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,974.82 : 696,879.83 = 278,634.90 : x
  2. Step 2: Convert to fraction form
    504,974.82/696,879.83 = 278,634.90/x
  3. Step 3: Cross multiply
    504,974.82x = 696,879.83 × 278,634.90
  4. Step 4: Simplify right side
    504,974.82x = 194,175,040,350.89
  5. Step 5: Solve for x
    x = 194,175,040,350.89/504,974.82
  6. Step 6: Final answer
    x = 384,524.20

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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.