Home / 859,911.70-1,289,867.55-260,843.80

Finding the Fourth Proportional to 859,911.70, 1,289,867.55 and 260,843.80

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Solution

The fourth proportional to 859,911.70, 1,289,867.55 and 260,843.80 is: 391,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,911.70 : 1,289,867.55 = 260,843.80 : x
  2. Step 2: Convert to fraction form
    859,911.70/1,289,867.55 = 260,843.80/x
  3. Step 3: Cross multiply
    859,911.70x = 1,289,867.55 × 260,843.80
  4. Step 4: Simplify right side
    859,911.70x = 336,453,953,238.69
  5. Step 5: Solve for x
    x = 336,453,953,238.69/859,911.70
  6. Step 6: Final answer
    x = 391,265.70

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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.