Home / 1,328,815.73-1,990,232.19-931,231.43

Finding the Fourth Proportional to 1,328,815.73, 1,990,232.19 and 931,231.43

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Solution

The fourth proportional to 1,328,815.73, 1,990,232.19 and 931,231.43 is: 1,394,750.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,815.73 : 1,990,232.19 = 931,231.43 : x
  2. Step 2: Convert to fraction form
    1,328,815.73/1,990,232.19 = 931,231.43/x
  3. Step 3: Cross multiply
    1,328,815.73x = 1,990,232.19 × 931,231.43
  4. Step 4: Simplify right side
    1,328,815.73x = 1,853,366,779,652.09
  5. Step 5: Solve for x
    x = 1,853,366,779,652.09/1,328,815.73
  6. Step 6: Final answer
    x = 1,394,750.78

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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.