Home / 859,904.70-1,289,857.05-260,836.80

Finding the Fourth Proportional to 859,904.70, 1,289,857.05 and 260,836.80

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Solution

The fourth proportional to 859,904.70, 1,289,857.05 and 260,836.80 is: 391,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,904.70 : 1,289,857.05 = 260,836.80 : x
  2. Step 2: Convert to fraction form
    859,904.70/1,289,857.05 = 260,836.80/x
  3. Step 3: Cross multiply
    859,904.70x = 1,289,857.05 × 260,836.80
  4. Step 4: Simplify right side
    859,904.70x = 336,442,185,379.44
  5. Step 5: Solve for x
    x = 336,442,185,379.44/859,904.70
  6. Step 6: Final answer
    x = 391,255.20

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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.