Home / 1,367,890.38-1,887,690.56-787,101.98

Finding the Fourth Proportional to 1,367,890.38, 1,887,690.56 and 787,101.98

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Solution

The fourth proportional to 1,367,890.38, 1,887,690.56 and 787,101.98 is: 1,086,201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367,890.38 : 1,887,690.56 = 787,101.98 : x
  2. Step 2: Convert to fraction form
    1,367,890.38/1,887,690.56 = 787,101.98/x
  3. Step 3: Cross multiply
    1,367,890.38x = 1,887,690.56 × 787,101.98
  4. Step 4: Simplify right side
    1,367,890.38x = 1,485,804,964,029.35
  5. Step 5: Solve for x
    x = 1,485,804,964,029.35/1,367,890.38
  6. Step 6: Final answer
    x = 1,086,201.78

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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.