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Finding the Fourth Proportional to 463,660.78, 639,916.30 and 335,015.36

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Solution

The fourth proportional to 463,660.78, 639,916.30 and 335,015.36 is: 462,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,660.78 : 639,916.30 = 335,015.36 : x
  2. Step 2: Convert to fraction form
    463,660.78/639,916.30 = 335,015.36/x
  3. Step 3: Cross multiply
    463,660.78x = 639,916.30 × 335,015.36
  4. Step 4: Simplify right side
    463,660.78x = 214,381,789,614.37
  5. Step 5: Solve for x
    x = 214,381,789,614.37/463,660.78
  6. Step 6: Final answer
    x = 462,367.75

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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.