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Finding the Fourth Proportional to 442,115.80, 663,173.70 and 403,408.60

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Solution

The fourth proportional to 442,115.80, 663,173.70 and 403,408.60 is: 605,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,115.80 : 663,173.70 = 403,408.60 : x
  2. Step 2: Convert to fraction form
    442,115.80/663,173.70 = 403,408.60/x
  3. Step 3: Cross multiply
    442,115.80x = 663,173.70 × 403,408.60
  4. Step 4: Simplify right side
    442,115.80x = 267,529,973,873.82
  5. Step 5: Solve for x
    x = 267,529,973,873.82/442,115.80
  6. Step 6: Final answer
    x = 605,112.90

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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.