Home / 859,821.54-1,289,735.42-260,787.89

Finding the Fourth Proportional to 859,821.54, 1,289,735.42 and 260,787.89

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Solution

The fourth proportional to 859,821.54, 1,289,735.42 and 260,787.89 is: 391,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,821.54 : 1,289,735.42 = 260,787.89 : x
  2. Step 2: Convert to fraction form
    859,821.54/1,289,735.42 = 260,787.89/x
  3. Step 3: Cross multiply
    859,821.54x = 1,289,735.42 × 260,787.89
  4. Step 4: Simplify right side
    859,821.54x = 336,347,371,087.45
  5. Step 5: Solve for x
    x = 336,347,371,087.45/859,821.54
  6. Step 6: Final answer
    x = 391,182.77

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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.