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Finding the Fourth Proportional to 700,879.78, 967,214.48 and 378,589.88

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Solution

The fourth proportional to 700,879.78, 967,214.48 and 378,589.88 is: 522,454.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,879.78 : 967,214.48 = 378,589.88 : x
  2. Step 2: Convert to fraction form
    700,879.78/967,214.48 = 378,589.88/x
  3. Step 3: Cross multiply
    700,879.78x = 967,214.48 × 378,589.88
  4. Step 4: Simplify right side
    700,879.78x = 366,177,617,281.97
  5. Step 5: Solve for x
    x = 366,177,617,281.97/700,879.78
  6. Step 6: Final answer
    x = 522,454.25

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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.