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Finding the Fourth Proportional to 694,334.58, 958,136.49 and 388,357.98

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Solution

The fourth proportional to 694,334.58, 958,136.49 and 388,357.98 is: 535,908.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,334.58 : 958,136.49 = 388,357.98 : x
  2. Step 2: Convert to fraction form
    694,334.58/958,136.49 = 388,357.98/x
  3. Step 3: Cross multiply
    694,334.58x = 958,136.49 × 388,357.98
  4. Step 4: Simplify right side
    694,334.58x = 372,099,951,820.69
  5. Step 5: Solve for x
    x = 372,099,951,820.69/694,334.58
  6. Step 6: Final answer
    x = 535,908.71

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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.