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Finding the Fourth Proportional to 643,553.46, 965,333.43 and 264,680.82

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Solution

The fourth proportional to 643,553.46, 965,333.43 and 264,680.82 is: 397,022.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,553.46 : 965,333.43 = 264,680.82 : x
  2. Step 2: Convert to fraction form
    643,553.46/965,333.43 = 264,680.82/x
  3. Step 3: Cross multiply
    643,553.46x = 965,333.43 × 264,680.82
  4. Step 4: Simplify right side
    643,553.46x = 255,505,243,825.81
  5. Step 5: Solve for x
    x = 255,505,243,825.81/643,553.46
  6. Step 6: Final answer
    x = 397,022.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.