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Finding the Fourth Proportional to 880,801.20, 1,321,720.20 and 319,892.40

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Solution

The fourth proportional to 880,801.20, 1,321,720.20 and 319,892.40 is: 480,026.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,801.20 : 1,321,720.20 = 319,892.40 : x
  2. Step 2: Convert to fraction form
    880,801.20/1,321,720.20 = 319,892.40/x
  3. Step 3: Cross multiply
    880,801.20x = 1,321,720.20 × 319,892.40
  4. Step 4: Simplify right side
    880,801.20x = 422,808,246,906.48
  5. Step 5: Solve for x
    x = 422,808,246,906.48/880,801.20
  6. Step 6: Final answer
    x = 480,026.87

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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.