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Finding the Fourth Proportional to 521,361.92, 719,391.84 and 303,616.64

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Solution

The fourth proportional to 521,361.92, 719,391.84 and 303,616.64 is: 418,939.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,361.92 : 719,391.84 = 303,616.64 : x
  2. Step 2: Convert to fraction form
    521,361.92/719,391.84 = 303,616.64/x
  3. Step 3: Cross multiply
    521,361.92x = 719,391.84 × 303,616.64
  4. Step 4: Simplify right side
    521,361.92x = 218,419,333,304.22
  5. Step 5: Solve for x
    x = 218,419,333,304.22/521,361.92
  6. Step 6: Final answer
    x = 418,939.94

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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.