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Finding the Fourth Proportional to 694,715.46, 958,640.76 and 388,775.94

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Solution

The fourth proportional to 694,715.46, 958,640.76 and 388,775.94 is: 536,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,715.46 : 958,640.76 = 388,775.94 : x
  2. Step 2: Convert to fraction form
    694,715.46/958,640.76 = 388,775.94/x
  3. Step 3: Cross multiply
    694,715.46x = 958,640.76 × 388,775.94
  4. Step 4: Simplify right side
    694,715.46x = 372,696,462,591.31
  5. Step 5: Solve for x
    x = 372,696,462,591.31/694,715.46
  6. Step 6: Final answer
    x = 536,473.54

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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.