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Finding the Fourth Proportional to 880,843.60, 1,320,682.20 and 319,805.20

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Solution

The fourth proportional to 880,843.60, 1,320,682.20 and 319,805.20 is: 479,496.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,843.60 : 1,320,682.20 = 319,805.20 : x
  2. Step 2: Convert to fraction form
    880,843.60/1,320,682.20 = 319,805.20/x
  3. Step 3: Cross multiply
    880,843.60x = 1,320,682.20 × 319,805.20
  4. Step 4: Simplify right side
    880,843.60x = 422,361,035,107.44
  5. Step 5: Solve for x
    x = 422,361,035,107.44/880,843.60
  6. Step 6: Final answer
    x = 479,496.06

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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.