Home / 1,240,207.20-1,711,026.72-781,198.56

Finding the Fourth Proportional to 1,240,207.20, 1,711,026.72 and 781,198.56

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Solution

The fourth proportional to 1,240,207.20, 1,711,026.72 and 781,198.56 is: 1,077,764.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,207.20 : 1,711,026.72 = 781,198.56 : x
  2. Step 2: Convert to fraction form
    1,240,207.20/1,711,026.72 = 781,198.56/x
  3. Step 3: Cross multiply
    1,240,207.20x = 1,711,026.72 × 781,198.56
  4. Step 4: Simplify right side
    1,240,207.20x = 1,336,651,609,785.52
  5. Step 5: Solve for x
    x = 1,336,651,609,785.52/1,240,207.20
  6. Step 6: Final answer
    x = 1,077,764.76

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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.