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Finding the Fourth Proportional to 491,792.20, 737,688.30 and 323,830.60

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Solution

The fourth proportional to 491,792.20, 737,688.30 and 323,830.60 is: 485,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,792.20 : 737,688.30 = 323,830.60 : x
  2. Step 2: Convert to fraction form
    491,792.20/737,688.30 = 323,830.60/x
  3. Step 3: Cross multiply
    491,792.20x = 737,688.30 × 323,830.60
  4. Step 4: Simplify right side
    491,792.20x = 238,886,044,801.98
  5. Step 5: Solve for x
    x = 238,886,044,801.98/491,792.20
  6. Step 6: Final answer
    x = 485,745.90

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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.