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Finding the Fourth Proportional to 494,676.80, 742,015.20 and 120,699.80

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Solution

The fourth proportional to 494,676.80, 742,015.20 and 120,699.80 is: 181,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,676.80 : 742,015.20 = 120,699.80 : x
  2. Step 2: Convert to fraction form
    494,676.80/742,015.20 = 120,699.80/x
  3. Step 3: Cross multiply
    494,676.80x = 742,015.20 × 120,699.80
  4. Step 4: Simplify right side
    494,676.80x = 89,561,086,236.96
  5. Step 5: Solve for x
    x = 89,561,086,236.96/494,676.80
  6. Step 6: Final answer
    x = 181,049.70

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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.