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Finding the Fourth Proportional to 769,908.80, 1,153,480.80 and 659,316.80

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Solution

The fourth proportional to 769,908.80, 1,153,480.80 and 659,316.80 is: 987,791.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,908.80 : 1,153,480.80 = 659,316.80 : x
  2. Step 2: Convert to fraction form
    769,908.80/1,153,480.80 = 659,316.80/x
  3. Step 3: Cross multiply
    769,908.80x = 1,153,480.80 × 659,316.80
  4. Step 4: Simplify right side
    769,908.80x = 760,509,269,917.44
  5. Step 5: Solve for x
    x = 760,509,269,917.44/769,908.80
  6. Step 6: Final answer
    x = 987,791.37

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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.