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Finding the Fourth Proportional to 447,087.60, 670,631.40 and 422,593.20

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Solution

The fourth proportional to 447,087.60, 670,631.40 and 422,593.20 is: 633,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,087.60 : 670,631.40 = 422,593.20 : x
  2. Step 2: Convert to fraction form
    447,087.60/670,631.40 = 422,593.20/x
  3. Step 3: Cross multiply
    447,087.60x = 670,631.40 × 422,593.20
  4. Step 4: Simplify right side
    447,087.60x = 283,404,269,346.48
  5. Step 5: Solve for x
    x = 283,404,269,346.48/447,087.60
  6. Step 6: Final answer
    x = 633,889.80

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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.