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Finding the Fourth Proportional to 641,672.73, 962,176.85 and 342,072.84

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Solution

The fourth proportional to 641,672.73, 962,176.85 and 342,072.84 is: 512,932.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,672.73 : 962,176.85 = 342,072.84 : x
  2. Step 2: Convert to fraction form
    641,672.73/962,176.85 = 342,072.84/x
  3. Step 3: Cross multiply
    641,672.73x = 962,176.85 × 342,072.84
  4. Step 4: Simplify right side
    641,672.73x = 329,134,565,951.39
  5. Step 5: Solve for x
    x = 329,134,565,951.39/641,672.73
  6. Step 6: Final answer
    x = 512,932.14

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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.