Home / 693,081.11-1,039,620.96-260,879.28

Finding the Fourth Proportional to 693,081.11, 1,039,620.96 and 260,879.28

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Solution

The fourth proportional to 693,081.11, 1,039,620.96 and 260,879.28 is: 391,318.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,081.11 : 1,039,620.96 = 260,879.28 : x
  2. Step 2: Convert to fraction form
    693,081.11/1,039,620.96 = 260,879.28/x
  3. Step 3: Cross multiply
    693,081.11x = 1,039,620.96 × 260,879.28
  4. Step 4: Simplify right side
    693,081.11x = 271,215,567,517.71
  5. Step 5: Solve for x
    x = 271,215,567,517.71/693,081.11
  6. Step 6: Final answer
    x = 391,318.66

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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.