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Finding the Fourth Proportional to 550,234.20, 825,351.30 and 339,990.60

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Solution

The fourth proportional to 550,234.20, 825,351.30 and 339,990.60 is: 509,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,234.20 : 825,351.30 = 339,990.60 : x
  2. Step 2: Convert to fraction form
    550,234.20/825,351.30 = 339,990.60/x
  3. Step 3: Cross multiply
    550,234.20x = 825,351.30 × 339,990.60
  4. Step 4: Simplify right side
    550,234.20x = 280,611,683,697.78
  5. Step 5: Solve for x
    x = 280,611,683,697.78/550,234.20
  6. Step 6: Final answer
    x = 509,985.90

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Double scale
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Similar ratio
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1.5x scale

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.