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Finding the Fourth Proportional to 694,796.49, 958,817.73 and 388,871.64

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Solution

The fourth proportional to 694,796.49, 958,817.73 and 388,871.64 is: 536,642.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,796.49 : 958,817.73 = 388,871.64 : x
  2. Step 2: Convert to fraction form
    694,796.49/958,817.73 = 388,871.64/x
  3. Step 3: Cross multiply
    694,796.49x = 958,817.73 × 388,871.64
  4. Step 4: Simplify right side
    694,796.49x = 372,857,023,126.18
  5. Step 5: Solve for x
    x = 372,857,023,126.18/694,796.49
  6. Step 6: Final answer
    x = 536,642.06

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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.