Home / 859,896.20-1,289,844.30-260,828.30

Finding the Fourth Proportional to 859,896.20, 1,289,844.30 and 260,828.30

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Solution

The fourth proportional to 859,896.20, 1,289,844.30 and 260,828.30 is: 391,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,896.20 : 1,289,844.30 = 260,828.30 : x
  2. Step 2: Convert to fraction form
    859,896.20/1,289,844.30 = 260,828.30/x
  3. Step 3: Cross multiply
    859,896.20x = 1,289,844.30 × 260,828.30
  4. Step 4: Simplify right side
    859,896.20x = 336,427,896,033.69
  5. Step 5: Solve for x
    x = 336,427,896,033.69/859,896.20
  6. Step 6: Final answer
    x = 391,242.45

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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.