Home / 1,190,970.72-1,643,613.12-681,661.44

Finding the Fourth Proportional to 1,190,970.72, 1,643,613.12 and 681,661.44

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Solution

The fourth proportional to 1,190,970.72, 1,643,613.12 and 681,661.44 is: 940,734.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,970.72 : 1,643,613.12 = 681,661.44 : x
  2. Step 2: Convert to fraction form
    1,190,970.72/1,643,613.12 = 681,661.44/x
  3. Step 3: Cross multiply
    1,190,970.72x = 1,643,613.12 × 681,661.44
  4. Step 4: Simplify right side
    1,190,970.72x = 1,120,387,686,182.09
  5. Step 5: Solve for x
    x = 1,120,387,686,182.09/1,190,970.72
  6. Step 6: Final answer
    x = 940,734.87

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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.