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Finding the Fourth Proportional to 444,992.80, 667,489.20 and 426,330.40

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Solution

The fourth proportional to 444,992.80, 667,489.20 and 426,330.40 is: 639,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,992.80 : 667,489.20 = 426,330.40 : x
  2. Step 2: Convert to fraction form
    444,992.80/667,489.20 = 426,330.40/x
  3. Step 3: Cross multiply
    444,992.80x = 667,489.20 × 426,330.40
  4. Step 4: Simplify right side
    444,992.80x = 284,570,937,631.68
  5. Step 5: Solve for x
    x = 284,570,937,631.68/444,992.80
  6. Step 6: Final answer
    x = 639,495.60

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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.