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Finding the Fourth Proportional to 496,620.54, 685,323.45 and 289,928.54

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Solution

The fourth proportional to 496,620.54, 685,323.45 and 289,928.54 is: 400,093.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,620.54 : 685,323.45 = 289,928.54 : x
  2. Step 2: Convert to fraction form
    496,620.54/685,323.45 = 289,928.54/x
  3. Step 3: Cross multiply
    496,620.54x = 685,323.45 × 289,928.54
  4. Step 4: Simplify right side
    496,620.54x = 198,694,825,848.96
  5. Step 5: Solve for x
    x = 198,694,825,848.96/496,620.54
  6. Step 6: Final answer
    x = 400,093.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.