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Finding the Fourth Proportional to 694,287.86, 958,072.14 and 388,311.26

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Solution

The fourth proportional to 694,287.86, 958,072.14 and 388,311.26 is: 535,844.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,287.86 : 958,072.14 = 388,311.26 : x
  2. Step 2: Convert to fraction form
    694,287.86/958,072.14 = 388,311.26/x
  3. Step 3: Cross multiply
    694,287.86x = 958,072.14 × 388,311.26
  4. Step 4: Simplify right side
    694,287.86x = 372,030,199,854.30
  5. Step 5: Solve for x
    x = 372,030,199,854.30/694,287.86
  6. Step 6: Final answer
    x = 535,844.31

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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.