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Finding the Fourth Proportional to 694,091.70, 957,839.72 and 388,164.56

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Solution

The fourth proportional to 694,091.70, 957,839.72 and 388,164.56 is: 535,663.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,091.70 : 957,839.72 = 388,164.56 : x
  2. Step 2: Convert to fraction form
    694,091.70/957,839.72 = 388,164.56/x
  3. Step 3: Cross multiply
    694,091.70x = 957,839.72 × 388,164.56
  4. Step 4: Simplify right side
    694,091.70x = 371,799,426,734.30
  5. Step 5: Solve for x
    x = 371,799,426,734.30/694,091.70
  6. Step 6: Final answer
    x = 535,663.27

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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.