Home / 490,823.20-736,234.80-412,091.20

Finding the Fourth Proportional to 490,823.20, 736,234.80 and 412,091.20

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Solution

The fourth proportional to 490,823.20, 736,234.80 and 412,091.20 is: 618,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,823.20 : 736,234.80 = 412,091.20 : x
  2. Step 2: Convert to fraction form
    490,823.20/736,234.80 = 412,091.20/x
  3. Step 3: Cross multiply
    490,823.20x = 736,234.80 × 412,091.20
  4. Step 4: Simplify right side
    490,823.20x = 303,395,882,213.76
  5. Step 5: Solve for x
    x = 303,395,882,213.76/490,823.20
  6. Step 6: Final answer
    x = 618,136.80

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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.