Home / 859,823.54-1,289,738.42-260,789.89

Finding the Fourth Proportional to 859,823.54, 1,289,738.42 and 260,789.89

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Solution

The fourth proportional to 859,823.54, 1,289,738.42 and 260,789.89 is: 391,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,823.54 : 1,289,738.42 = 260,789.89 : x
  2. Step 2: Convert to fraction form
    859,823.54/1,289,738.42 = 260,789.89/x
  3. Step 3: Cross multiply
    859,823.54x = 1,289,738.42 × 260,789.89
  4. Step 4: Simplify right side
    859,823.54x = 336,350,740,680.57
  5. Step 5: Solve for x
    x = 336,350,740,680.57/859,823.54
  6. Step 6: Final answer
    x = 391,185.78

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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.