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Finding the Fourth Proportional to 591,770.41, 816,940.13 and 388,133.37

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Solution

The fourth proportional to 591,770.41, 816,940.13 and 388,133.37 is: 535,818.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,770.41 : 816,940.13 = 388,133.37 : x
  2. Step 2: Convert to fraction form
    591,770.41/816,940.13 = 388,133.37/x
  3. Step 3: Cross multiply
    591,770.41x = 816,940.13 × 388,133.37
  4. Step 4: Simplify right side
    591,770.41x = 317,081,725,745.14
  5. Step 5: Solve for x
    x = 317,081,725,745.14/591,770.41
  6. Step 6: Final answer
    x = 535,818.82

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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.