Home / 1,288,759.88-1,778,439.12-715,836.56

Finding the Fourth Proportional to 1,288,759.88, 1,778,439.12 and 715,836.56

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Solution

The fourth proportional to 1,288,759.88, 1,778,439.12 and 715,836.56 is: 987,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,759.88 : 1,778,439.12 = 715,836.56 : x
  2. Step 2: Convert to fraction form
    1,288,759.88/1,778,439.12 = 715,836.56/x
  3. Step 3: Cross multiply
    1,288,759.88x = 1,778,439.12 × 715,836.56
  4. Step 4: Simplify right side
    1,288,759.88x = 1,273,071,741,830.23
  5. Step 5: Solve for x
    x = 1,273,071,741,830.23/1,288,759.88
  6. Step 6: Final answer
    x = 987,826.95

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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.