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Finding the Fourth Proportional to 694,361.16, 958,173.17 and 388,384.47

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Solution

The fourth proportional to 694,361.16, 958,173.17 and 388,384.47 is: 535,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,361.16 : 958,173.17 = 388,384.47 : x
  2. Step 2: Convert to fraction form
    694,361.16/958,173.17 = 388,384.47/x
  3. Step 3: Cross multiply
    694,361.16x = 958,173.17 × 388,384.47
  4. Step 4: Simplify right side
    694,361.16x = 372,139,576,856.75
  5. Step 5: Solve for x
    x = 372,139,576,856.75/694,361.16
  6. Step 6: Final answer
    x = 535,945.27

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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.