Home / 1,288,761.88-1,778,441.88-715,838.56

Finding the Fourth Proportional to 1,288,761.88, 1,778,441.88 and 715,838.56

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Solution

The fourth proportional to 1,288,761.88, 1,778,441.88 and 715,838.56 is: 987,829.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,761.88 : 1,778,441.88 = 715,838.56 : x
  2. Step 2: Convert to fraction form
    1,288,761.88/1,778,441.88 = 715,838.56/x
  3. Step 3: Cross multiply
    1,288,761.88x = 1,778,441.88 × 715,838.56
  4. Step 4: Simplify right side
    1,288,761.88x = 1,273,077,274,422.89
  5. Step 5: Solve for x
    x = 1,273,077,274,422.89/1,288,761.88
  6. Step 6: Final answer
    x = 987,829.71

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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.