Home / 1,288,054.32-1,777,480.38-772,099.68

Finding the Fourth Proportional to 1,288,054.32, 1,777,480.38 and 772,099.68

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Solution

The fourth proportional to 1,288,054.32, 1,777,480.38 and 772,099.68 is: 1,065,476.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,054.32 : 1,777,480.38 = 772,099.68 : x
  2. Step 2: Convert to fraction form
    1,288,054.32/1,777,480.38 = 772,099.68/x
  3. Step 3: Cross multiply
    1,288,054.32x = 1,777,480.38 × 772,099.68
  4. Step 4: Simplify right side
    1,288,054.32x = 1,372,392,032,604.28
  5. Step 5: Solve for x
    x = 1,372,392,032,604.28/1,288,054.32
  6. Step 6: Final answer
    x = 1,065,476.83

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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.