Home / 827,136.20-1,240,704.30-328,500.20

Finding the Fourth Proportional to 827,136.20, 1,240,704.30 and 328,500.20

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Solution

The fourth proportional to 827,136.20, 1,240,704.30 and 328,500.20 is: 492,750.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,136.20 : 1,240,704.30 = 328,500.20 : x
  2. Step 2: Convert to fraction form
    827,136.20/1,240,704.30 = 328,500.20/x
  3. Step 3: Cross multiply
    827,136.20x = 1,240,704.30 × 328,500.20
  4. Step 4: Simplify right side
    827,136.20x = 407,571,610,690.86
  5. Step 5: Solve for x
    x = 407,571,610,690.86/827,136.20
  6. Step 6: Final answer
    x = 492,750.30

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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.