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Finding the Fourth Proportional to 694,806.30, 958,614.12 and 388,834.07

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Solution

The fourth proportional to 694,806.30, 958,614.12 and 388,834.07 is: 536,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,806.30 : 958,614.12 = 388,834.07 : x
  2. Step 2: Convert to fraction form
    694,806.30/958,614.12 = 388,834.07/x
  3. Step 3: Cross multiply
    694,806.30x = 958,614.12 × 388,834.07
  4. Step 4: Simplify right side
    694,806.30x = 372,741,825,046.00
  5. Step 5: Solve for x
    x = 372,741,825,046.00/694,806.30
  6. Step 6: Final answer
    x = 536,468.69

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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.