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Finding the Fourth Proportional to 703,908.80, 1,055,863.20 and 330,660.80

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Solution

The fourth proportional to 703,908.80, 1,055,863.20 and 330,660.80 is: 495,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,908.80 : 1,055,863.20 = 330,660.80 : x
  2. Step 2: Convert to fraction form
    703,908.80/1,055,863.20 = 330,660.80/x
  3. Step 3: Cross multiply
    703,908.80x = 1,055,863.20 × 330,660.80
  4. Step 4: Simplify right side
    703,908.80x = 349,132,570,402.56
  5. Step 5: Solve for x
    x = 349,132,570,402.56/703,908.80
  6. Step 6: Final answer
    x = 495,991.20

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Similar ratio
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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.