Home / 918,538.22-1,268,201.31-821,440.82

Finding the Fourth Proportional to 918,538.22, 1,268,201.31 and 821,440.82

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Solution

The fourth proportional to 918,538.22, 1,268,201.31 and 821,440.82 is: 1,134,141.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,538.22 : 1,268,201.31 = 821,440.82 : x
  2. Step 2: Convert to fraction form
    918,538.22/1,268,201.31 = 821,440.82/x
  3. Step 3: Cross multiply
    918,538.22x = 1,268,201.31 × 821,440.82
  4. Step 4: Simplify right side
    918,538.22x = 1,041,752,324,101.57
  5. Step 5: Solve for x
    x = 1,041,752,324,101.57/918,538.22
  6. Step 6: Final answer
    x = 1,134,141.51

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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.