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Finding the Fourth Proportional to 880,863.70, 1,321,641.15 and 319,954.90

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Solution

The fourth proportional to 880,863.70, 1,321,641.15 and 319,954.90 is: 480,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,863.70 : 1,321,641.15 = 319,954.90 : x
  2. Step 2: Convert to fraction form
    880,863.70/1,321,641.15 = 319,954.90/x
  3. Step 3: Cross multiply
    880,863.70x = 1,321,641.15 × 319,954.90
  4. Step 4: Simplify right side
    880,863.70x = 422,865,561,984.14
  5. Step 5: Solve for x
    x = 422,865,561,984.14/880,863.70
  6. Step 6: Final answer
    x = 480,057.88

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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.