Home / 1,986,117.86-2,743,609.57-1,912,380.32

Finding the Fourth Proportional to 1,986,117.86, 2,743,609.57 and 1,912,380.32

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Solution

The fourth proportional to 1,986,117.86, 2,743,609.57 and 1,912,380.32 is: 2,641,749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,117.86 : 2,743,609.57 = 1,912,380.32 : x
  2. Step 2: Convert to fraction form
    1,986,117.86/2,743,609.57 = 1,912,380.32/x
  3. Step 3: Cross multiply
    1,986,117.86x = 2,743,609.57 × 1,912,380.32
  4. Step 4: Simplify right side
    1,986,117.86x = 5,246,824,928,932.66
  5. Step 5: Solve for x
    x = 5,246,824,928,932.66/1,986,117.86
  6. Step 6: Final answer
    x = 2,641,749.04

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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.