Home / 1,079,245.12-1,619,042.88-405,378.88

Finding the Fourth Proportional to 1,079,245.12, 1,619,042.88 and 405,378.88

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Solution

The fourth proportional to 1,079,245.12, 1,619,042.88 and 405,378.88 is: 608,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,245.12 : 1,619,042.88 = 405,378.88 : x
  2. Step 2: Convert to fraction form
    1,079,245.12/1,619,042.88 = 405,378.88/x
  3. Step 3: Cross multiply
    1,079,245.12x = 1,619,042.88 × 405,378.88
  4. Step 4: Simplify right side
    1,079,245.12x = 656,325,789,366.37
  5. Step 5: Solve for x
    x = 656,325,789,366.37/1,079,245.12
  6. Step 6: Final answer
    x = 608,134.13

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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.