Home / 1,261,791.64-1,741,896.80-778,622.86

Finding the Fourth Proportional to 1,261,791.64, 1,741,896.80 and 778,622.86

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Solution

The fourth proportional to 1,261,791.64, 1,741,896.80 and 778,622.86 is: 1,074,884.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,791.64 : 1,741,896.80 = 778,622.86 : x
  2. Step 2: Convert to fraction form
    1,261,791.64/1,741,896.80 = 778,622.86/x
  3. Step 3: Cross multiply
    1,261,791.64x = 1,741,896.80 × 778,622.86
  4. Step 4: Simplify right side
    1,261,791.64x = 1,356,280,668,240.85
  5. Step 5: Solve for x
    x = 1,356,280,668,240.85/1,261,791.64
  6. Step 6: Final answer
    x = 1,074,884.81

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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.