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Finding the Fourth Proportional to 383,610.60, 575,415.90 and 326,529.90

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Solution

The fourth proportional to 383,610.60, 575,415.90 and 326,529.90 is: 489,794.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,610.60 : 575,415.90 = 326,529.90 : x
  2. Step 2: Convert to fraction form
    383,610.60/575,415.90 = 326,529.90/x
  3. Step 3: Cross multiply
    383,610.60x = 575,415.90 × 326,529.90
  4. Step 4: Simplify right side
    383,610.60x = 187,890,496,285.41
  5. Step 5: Solve for x
    x = 187,890,496,285.41/383,610.60
  6. Step 6: Final answer
    x = 489,794.85

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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.