Home / 641,688.87-964,278.05-342,380.91

Finding the Fourth Proportional to 641,688.87, 964,278.05 and 342,380.91

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Solution

The fourth proportional to 641,688.87, 964,278.05 and 342,380.91 is: 514,502.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,688.87 : 964,278.05 = 342,380.91 : x
  2. Step 2: Convert to fraction form
    641,688.87/964,278.05 = 342,380.91/x
  3. Step 3: Cross multiply
    641,688.87x = 964,278.05 × 342,380.91
  4. Step 4: Simplify right side
    641,688.87x = 330,150,394,540.12
  5. Step 5: Solve for x
    x = 330,150,394,540.12/641,688.87
  6. Step 6: Final answer
    x = 514,502.29

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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.