Home / 1,393,790.83-1,923,198.19-820,945.06

Finding the Fourth Proportional to 1,393,790.83, 1,923,198.19 and 820,945.06

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Solution

The fourth proportional to 1,393,790.83, 1,923,198.19 and 820,945.06 is: 1,132,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,790.83 : 1,923,198.19 = 820,945.06 : x
  2. Step 2: Convert to fraction form
    1,393,790.83/1,923,198.19 = 820,945.06/x
  3. Step 3: Cross multiply
    1,393,790.83x = 1,923,198.19 × 820,945.06
  4. Step 4: Simplify right side
    1,393,790.83x = 1,578,840,053,481.44
  5. Step 5: Solve for x
    x = 1,578,840,053,481.44/1,393,790.83
  6. Step 6: Final answer
    x = 1,132,766.85

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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.