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Finding the Fourth Proportional to 694,891.84, 958,966.97 and 388,960.61

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Solution

The fourth proportional to 694,891.84, 958,966.97 and 388,960.61 is: 536,774.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,891.84 : 958,966.97 = 388,960.61 : x
  2. Step 2: Convert to fraction form
    694,891.84/958,966.97 = 388,960.61/x
  3. Step 3: Cross multiply
    694,891.84x = 958,966.97 × 388,960.61
  4. Step 4: Simplify right side
    694,891.84x = 373,000,376,196.04
  5. Step 5: Solve for x
    x = 373,000,376,196.04/694,891.84
  6. Step 6: Final answer
    x = 536,774.73

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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.