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Finding the Fourth Proportional to 404,672.80, 605,626.80 and 354,906.40

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Solution

The fourth proportional to 404,672.80, 605,626.80 and 354,906.40 is: 531,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,672.80 : 605,626.80 = 354,906.40 : x
  2. Step 2: Convert to fraction form
    404,672.80/605,626.80 = 354,906.40/x
  3. Step 3: Cross multiply
    404,672.80x = 605,626.80 × 354,906.40
  4. Step 4: Simplify right side
    404,672.80x = 214,940,827,331.52
  5. Step 5: Solve for x
    x = 214,940,827,331.52/404,672.80
  6. Step 6: Final answer
    x = 531,147.21

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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.