Home / 859,896.70-1,289,845.05-260,828.80

Finding the Fourth Proportional to 859,896.70, 1,289,845.05 and 260,828.80

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Solution

The fourth proportional to 859,896.70, 1,289,845.05 and 260,828.80 is: 391,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,896.70 : 1,289,845.05 = 260,828.80 : x
  2. Step 2: Convert to fraction form
    859,896.70/1,289,845.05 = 260,828.80/x
  3. Step 3: Cross multiply
    859,896.70x = 1,289,845.05 × 260,828.80
  4. Step 4: Simplify right side
    859,896.70x = 336,428,736,577.44
  5. Step 5: Solve for x
    x = 336,428,736,577.44/859,896.70
  6. Step 6: Final answer
    x = 391,243.20

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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.