Home / 1,398,190.79-2,087,078.87-1,199,786.15

Finding the Fourth Proportional to 1,398,190.79, 2,087,078.87 and 1,199,786.15

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Solution

The fourth proportional to 1,398,190.79, 2,087,078.87 and 1,199,786.15 is: 1,790,920.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,190.79 : 2,087,078.87 = 1,199,786.15 : x
  2. Step 2: Convert to fraction form
    1,398,190.79/2,087,078.87 = 1,199,786.15/x
  3. Step 3: Cross multiply
    1,398,190.79x = 2,087,078.87 × 1,199,786.15
  4. Step 4: Simplify right side
    1,398,190.79x = 2,504,048,327,061.73
  5. Step 5: Solve for x
    x = 2,504,048,327,061.73/1,398,190.79
  6. Step 6: Final answer
    x = 1,790,920.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.