Home / 770,140.80-1,155,288.40-264,635.20

Finding the Fourth Proportional to 770,140.80, 1,155,288.40 and 264,635.20

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Solution

The fourth proportional to 770,140.80, 1,155,288.40 and 264,635.20 is: 396,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,140.80 : 1,155,288.40 = 264,635.20 : x
  2. Step 2: Convert to fraction form
    770,140.80/1,155,288.40 = 264,635.20/x
  3. Step 3: Cross multiply
    770,140.80x = 1,155,288.40 × 264,635.20
  4. Step 4: Simplify right side
    770,140.80x = 305,729,976,791.68
  5. Step 5: Solve for x
    x = 305,729,976,791.68/770,140.80
  6. Step 6: Final answer
    x = 396,979.33

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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.