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Finding the Fourth Proportional to 463,912.36, 640,560.92 and 356,311.96

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Solution

The fourth proportional to 463,912.36, 640,560.92 and 356,311.96 is: 491,988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,912.36 : 640,560.92 = 356,311.96 : x
  2. Step 2: Convert to fraction form
    463,912.36/640,560.92 = 356,311.96/x
  3. Step 3: Cross multiply
    463,912.36x = 640,560.92 × 356,311.96
  4. Step 4: Simplify right side
    463,912.36x = 228,239,516,904.60
  5. Step 5: Solve for x
    x = 228,239,516,904.60/463,912.36
  6. Step 6: Final answer
    x = 491,988.44

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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.