Home / 1,189,321.92-1,642,626.45-783,238.95

Finding the Fourth Proportional to 1,189,321.92, 1,642,626.45 and 783,238.95

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Solution

The fourth proportional to 1,189,321.92, 1,642,626.45 and 783,238.95 is: 1,081,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,321.92 : 1,642,626.45 = 783,238.95 : x
  2. Step 2: Convert to fraction form
    1,189,321.92/1,642,626.45 = 783,238.95/x
  3. Step 3: Cross multiply
    1,189,321.92x = 1,642,626.45 × 783,238.95
  4. Step 4: Simplify right side
    1,189,321.92x = 1,286,569,015,940.23
  5. Step 5: Solve for x
    x = 1,286,569,015,940.23/1,189,321.92
  6. Step 6: Final answer
    x = 1,081,766.84

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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.