Home / 1,288,534.38-1,778,198.92-707,811.36

Finding the Fourth Proportional to 1,288,534.38, 1,778,198.92 and 707,811.36

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Solution

The fourth proportional to 1,288,534.38, 1,778,198.92 and 707,811.36 is: 976,791.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,534.38 : 1,778,198.92 = 707,811.36 : x
  2. Step 2: Convert to fraction form
    1,288,534.38/1,778,198.92 = 707,811.36/x
  3. Step 3: Cross multiply
    1,288,534.38x = 1,778,198.92 × 707,811.36
  4. Step 4: Simplify right side
    1,288,534.38x = 1,258,629,395,915.73
  5. Step 5: Solve for x
    x = 1,258,629,395,915.73/1,288,534.38
  6. Step 6: Final answer
    x = 976,791.47

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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.