Home / 1,918,288.78-2,876,375.21-780,759

Finding the Fourth Proportional to 1,918,288.78, 2,876,375.21 and 780,759

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Solution

The fourth proportional to 1,918,288.78, 2,876,375.21 and 780,759 is: 1,170,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,288.78 : 2,876,375.21 = 780,759 : x
  2. Step 2: Convert to fraction form
    1,918,288.78/2,876,375.21 = 780,759/x
  3. Step 3: Cross multiply
    1,918,288.78x = 2,876,375.21 × 780,759
  4. Step 4: Simplify right side
    1,918,288.78x = 2,245,755,828,680.60
  5. Step 5: Solve for x
    x = 2,245,755,828,680.60/1,918,288.78
  6. Step 6: Final answer
    x = 1,170,707.90

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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.