Home / 1,368,912.77-1,888,889.75-788,023.61

Finding the Fourth Proportional to 1,368,912.77, 1,888,889.75 and 788,023.61

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Solution

The fourth proportional to 1,368,912.77, 1,888,889.75 and 788,023.61 is: 1,087,351.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,912.77 : 1,888,889.75 = 788,023.61 : x
  2. Step 2: Convert to fraction form
    1,368,912.77/1,888,889.75 = 788,023.61/x
  3. Step 3: Cross multiply
    1,368,912.77x = 1,888,889.75 × 788,023.61
  4. Step 4: Simplify right side
    1,368,912.77x = 1,488,489,719,687.00
  5. Step 5: Solve for x
    x = 1,488,489,719,687.00/1,368,912.77
  6. Step 6: Final answer
    x = 1,087,351.77

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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.