Home / 727,080.62-1,003,111.54-420,989.92

Finding the Fourth Proportional to 727,080.62, 1,003,111.54 and 420,989.92

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Solution

The fourth proportional to 727,080.62, 1,003,111.54 and 420,989.92 is: 580,815.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,080.62 : 1,003,111.54 = 420,989.92 : x
  2. Step 2: Convert to fraction form
    727,080.62/1,003,111.54 = 420,989.92/x
  3. Step 3: Cross multiply
    727,080.62x = 1,003,111.54 × 420,989.92
  4. Step 4: Simplify right side
    727,080.62x = 422,299,846,975.68
  5. Step 5: Solve for x
    x = 422,299,846,975.68/727,080.62
  6. Step 6: Final answer
    x = 580,815.71

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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.