Home / 1,288,661.64-1,778,139.18-744,847.71

Finding the Fourth Proportional to 1,288,661.64, 1,778,139.18 and 744,847.71

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Solution

The fourth proportional to 1,288,661.64, 1,778,139.18 and 744,847.71 is: 1,027,766.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,661.64 : 1,778,139.18 = 744,847.71 : x
  2. Step 2: Convert to fraction form
    1,288,661.64/1,778,139.18 = 744,847.71/x
  3. Step 3: Cross multiply
    1,288,661.64x = 1,778,139.18 × 744,847.71
  4. Step 4: Simplify right side
    1,288,661.64x = 1,324,442,896,284.28
  5. Step 5: Solve for x
    x = 1,324,442,896,284.28/1,288,661.64
  6. Step 6: Final answer
    x = 1,027,766.22

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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.