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Finding the Fourth Proportional to 694,055.85, 957,791.66 and 388,132.83

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Solution

The fourth proportional to 694,055.85, 957,791.66 and 388,132.83 is: 535,620.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,055.85 : 957,791.66 = 388,132.83 : x
  2. Step 2: Convert to fraction form
    694,055.85/957,791.66 = 388,132.83/x
  3. Step 3: Cross multiply
    694,055.85x = 957,791.66 × 388,132.83
  4. Step 4: Simplify right side
    694,055.85x = 371,750,385,605.53
  5. Step 5: Solve for x
    x = 371,750,385,605.53/694,055.85
  6. Step 6: Final answer
    x = 535,620.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.