Home / 921,394.09-1,382,340.25-281,720.43

Finding the Fourth Proportional to 921,394.09, 1,382,340.25 and 281,720.43

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Solution

The fourth proportional to 921,394.09, 1,382,340.25 and 281,720.43 is: 422,656.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,394.09 : 1,382,340.25 = 281,720.43 : x
  2. Step 2: Convert to fraction form
    921,394.09/1,382,340.25 = 281,720.43/x
  3. Step 3: Cross multiply
    921,394.09x = 1,382,340.25 × 281,720.43
  4. Step 4: Simplify right side
    921,394.09x = 389,433,489,636.31
  5. Step 5: Solve for x
    x = 389,433,489,636.31/921,394.09
  6. Step 6: Final answer
    x = 422,656.81

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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.