Home / 1,278,047.80-1,914,738.90-1,040,102.20

Finding the Fourth Proportional to 1,278,047.80, 1,914,738.90 and 1,040,102.20

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Solution

The fourth proportional to 1,278,047.80, 1,914,738.90 and 1,040,102.20 is: 1,558,254.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,047.80 : 1,914,738.90 = 1,040,102.20 : x
  2. Step 2: Convert to fraction form
    1,278,047.80/1,914,738.90 = 1,040,102.20/x
  3. Step 3: Cross multiply
    1,278,047.80x = 1,914,738.90 × 1,040,102.20
  4. Step 4: Simplify right side
    1,278,047.80x = 1,991,524,142,315.58
  5. Step 5: Solve for x
    x = 1,991,524,142,315.58/1,278,047.80
  6. Step 6: Final answer
    x = 1,558,254.82

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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.