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Finding the Fourth Proportional to 408,549.20, 613,284.60 and 315,467.60

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Solution

The fourth proportional to 408,549.20, 613,284.60 and 315,467.60 is: 473,557.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,549.20 : 613,284.60 = 315,467.60 : x
  2. Step 2: Convert to fraction form
    408,549.20/613,284.60 = 315,467.60/x
  3. Step 3: Cross multiply
    408,549.20x = 613,284.60 × 315,467.60
  4. Step 4: Simplify right side
    408,549.20x = 193,471,420,878.96
  5. Step 5: Solve for x
    x = 193,471,420,878.96/408,549.20
  6. Step 6: Final answer
    x = 473,557.21

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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.