Home / 1,321,065.15-1,981,597.73-689,896.95

Finding the Fourth Proportional to 1,321,065.15, 1,981,597.73 and 689,896.95

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Solution

The fourth proportional to 1,321,065.15, 1,981,597.73 and 689,896.95 is: 1,034,845.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,065.15 : 1,981,597.73 = 689,896.95 : x
  2. Step 2: Convert to fraction form
    1,321,065.15/1,981,597.73 = 689,896.95/x
  3. Step 3: Cross multiply
    1,321,065.15x = 1,981,597.73 × 689,896.95
  4. Step 4: Simplify right side
    1,321,065.15x = 1,367,098,226,604.44
  5. Step 5: Solve for x
    x = 1,367,098,226,604.44/1,321,065.15
  6. Step 6: Final answer
    x = 1,034,845.43

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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.