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Finding the Fourth Proportional to 694,611.89, 958,531.82 and 388,727.13

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Solution

The fourth proportional to 694,611.89, 958,531.82 and 388,727.13 is: 536,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,611.89 : 958,531.82 = 388,727.13 : x
  2. Step 2: Convert to fraction form
    694,611.89/958,531.82 = 388,727.13/x
  3. Step 3: Cross multiply
    694,611.89x = 958,531.82 × 388,727.13
  4. Step 4: Simplify right side
    694,611.89x = 372,607,321,458.64
  5. Step 5: Solve for x
    x = 372,607,321,458.64/694,611.89
  6. Step 6: Final answer
    x = 536,425.20

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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.