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Finding the Fourth Proportional to 442,003.20, 661,449.60 and 404,678.40

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Solution

The fourth proportional to 442,003.20, 661,449.60 and 404,678.40 is: 605,593.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,003.20 : 661,449.60 = 404,678.40 : x
  2. Step 2: Convert to fraction form
    442,003.20/661,449.60 = 404,678.40/x
  3. Step 3: Cross multiply
    442,003.20x = 661,449.60 × 404,678.40
  4. Step 4: Simplify right side
    442,003.20x = 267,674,365,808.64
  5. Step 5: Solve for x
    x = 267,674,365,808.64/442,003.20
  6. Step 6: Final answer
    x = 605,593.73

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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.