Home / 642,819.92-964,238.09-443,086.68

Finding the Fourth Proportional to 642,819.92, 964,238.09 and 443,086.68

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Solution

The fourth proportional to 642,819.92, 964,238.09 and 443,086.68 is: 664,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,819.92 : 964,238.09 = 443,086.68 : x
  2. Step 2: Convert to fraction form
    642,819.92/964,238.09 = 443,086.68/x
  3. Step 3: Cross multiply
    642,819.92x = 964,238.09 × 443,086.68
  4. Step 4: Simplify right side
    642,819.92x = 427,241,053,339.27
  5. Step 5: Solve for x
    x = 427,241,053,339.27/642,819.92
  6. Step 6: Final answer
    x = 664,635.67

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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.