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Finding the Fourth Proportional to 522,096.80, 783,145.20 and 321,767.60

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Solution

The fourth proportional to 522,096.80, 783,145.20 and 321,767.60 is: 482,651.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,096.80 : 783,145.20 = 321,767.60 : x
  2. Step 2: Convert to fraction form
    522,096.80/783,145.20 = 321,767.60/x
  3. Step 3: Cross multiply
    522,096.80x = 783,145.20 × 321,767.60
  4. Step 4: Simplify right side
    522,096.80x = 251,990,751,455.52
  5. Step 5: Solve for x
    x = 251,990,751,455.52/522,096.80
  6. Step 6: Final answer
    x = 482,651.40

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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.