Home / 921,393.09-1,382,338.75-281,719.43

Finding the Fourth Proportional to 921,393.09, 1,382,338.75 and 281,719.43

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Solution

The fourth proportional to 921,393.09, 1,382,338.75 and 281,719.43 is: 422,655.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,393.09 : 1,382,338.75 = 281,719.43 : x
  2. Step 2: Convert to fraction form
    921,393.09/1,382,338.75 = 281,719.43/x
  3. Step 3: Cross multiply
    921,393.09x = 1,382,338.75 × 281,719.43
  4. Step 4: Simplify right side
    921,393.09x = 389,431,684,716.91
  5. Step 5: Solve for x
    x = 389,431,684,716.91/921,393.09
  6. Step 6: Final answer
    x = 422,655.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.