Home / 1,123,879.70-1,685,819.55-413,815.48

Finding the Fourth Proportional to 1,123,879.70, 1,685,819.55 and 413,815.48

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Solution

The fourth proportional to 1,123,879.70, 1,685,819.55 and 413,815.48 is: 620,723.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,879.70 : 1,685,819.55 = 413,815.48 : x
  2. Step 2: Convert to fraction form
    1,123,879.70/1,685,819.55 = 413,815.48/x
  3. Step 3: Cross multiply
    1,123,879.70x = 1,685,819.55 × 413,815.48
  4. Step 4: Simplify right side
    1,123,879.70x = 697,618,217,847.54
  5. Step 5: Solve for x
    x = 697,618,217,847.54/1,123,879.70
  6. Step 6: Final answer
    x = 620,723.21

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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.