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Finding the Fourth Proportional to 694,437.44, 958,318.83 and 388,512.59

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Solution

The fourth proportional to 694,437.44, 958,318.83 and 388,512.59 is: 536,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,437.44 : 958,318.83 = 388,512.59 : x
  2. Step 2: Convert to fraction form
    694,437.44/958,318.83 = 388,512.59/x
  3. Step 3: Cross multiply
    694,437.44x = 958,318.83 × 388,512.59
  4. Step 4: Simplify right side
    694,437.44x = 372,318,925,897.48
  5. Step 5: Solve for x
    x = 372,318,925,897.48/694,437.44
  6. Step 6: Final answer
    x = 536,144.66

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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.