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Finding the Fourth Proportional to 669,244.80, 1,004,644.80 and 403,305.60

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Solution

The fourth proportional to 669,244.80, 1,004,644.80 and 403,305.60 is: 605,427.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,244.80 : 1,004,644.80 = 403,305.60 : x
  2. Step 2: Convert to fraction form
    669,244.80/1,004,644.80 = 403,305.60/x
  3. Step 3: Cross multiply
    669,244.80x = 1,004,644.80 × 403,305.60
  4. Step 4: Simplify right side
    669,244.80x = 405,178,873,850.88
  5. Step 5: Solve for x
    x = 405,178,873,850.88/669,244.80
  6. Step 6: Final answer
    x = 605,427.00

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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.