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Finding the Fourth Proportional to 603,375.73, 832,420.43 and 388,640.43

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Solution

The fourth proportional to 603,375.73, 832,420.43 and 388,640.43 is: 536,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,375.73 : 832,420.43 = 388,640.43 : x
  2. Step 2: Convert to fraction form
    603,375.73/832,420.43 = 388,640.43/x
  3. Step 3: Cross multiply
    603,375.73x = 832,420.43 × 388,640.43
  4. Step 4: Simplify right side
    603,375.73x = 323,512,227,750.68
  5. Step 5: Solve for x
    x = 323,512,227,750.68/603,375.73
  6. Step 6: Final answer
    x = 536,170.44

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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.