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Finding the Fourth Proportional to 444,993.80, 667,490.70 and 426,331.40

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Solution

The fourth proportional to 444,993.80, 667,490.70 and 426,331.40 is: 639,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,993.80 : 667,490.70 = 426,331.40 : x
  2. Step 2: Convert to fraction form
    444,993.80/667,490.70 = 426,331.40/x
  3. Step 3: Cross multiply
    444,993.80x = 667,490.70 × 426,331.40
  4. Step 4: Simplify right side
    444,993.80x = 284,572,244,617.98
  5. Step 5: Solve for x
    x = 284,572,244,617.98/444,993.80
  6. Step 6: Final answer
    x = 639,497.10

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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.