Home / 1,215,512.82-1,677,639.78-801,322.86

Finding the Fourth Proportional to 1,215,512.82, 1,677,639.78 and 801,322.86

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Solution

The fourth proportional to 1,215,512.82, 1,677,639.78 and 801,322.86 is: 1,105,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,512.82 : 1,677,639.78 = 801,322.86 : x
  2. Step 2: Convert to fraction form
    1,215,512.82/1,677,639.78 = 801,322.86/x
  3. Step 3: Cross multiply
    1,215,512.82x = 1,677,639.78 × 801,322.86
  4. Step 4: Simplify right side
    1,215,512.82x = 1,344,331,106,559.37
  5. Step 5: Solve for x
    x = 1,344,331,106,559.37/1,215,512.82
  6. Step 6: Final answer
    x = 1,105,978.55

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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.