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Finding the Fourth Proportional to 694,954.07, 959,056.64 and 389,028.65

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Solution

The fourth proportional to 694,954.07, 959,056.64 and 389,028.65 is: 536,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,954.07 : 959,056.64 = 389,028.65 : x
  2. Step 2: Convert to fraction form
    694,954.07/959,056.64 = 389,028.65/x
  3. Step 3: Cross multiply
    694,954.07x = 959,056.64 × 389,028.65
  4. Step 4: Simplify right side
    694,954.07x = 373,100,508,989.73
  5. Step 5: Solve for x
    x = 373,100,508,989.73/694,954.07
  6. Step 6: Final answer
    x = 536,870.75

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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.