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Finding the Fourth Proportional to 694,286.86, 958,070.76 and 388,310.26

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Solution

The fourth proportional to 694,286.86, 958,070.76 and 388,310.26 is: 535,842.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,286.86 : 958,070.76 = 388,310.26 : x
  2. Step 2: Convert to fraction form
    694,286.86/958,070.76 = 388,310.26/x
  3. Step 3: Cross multiply
    694,286.86x = 958,070.76 × 388,310.26
  4. Step 4: Simplify right side
    694,286.86x = 372,028,705,914.00
  5. Step 5: Solve for x
    x = 372,028,705,914.00/694,286.86
  6. Step 6: Final answer
    x = 535,842.93

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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.