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Finding the Fourth Proportional to 542,880.60, 813,092.10 and 321,696.60

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Solution

The fourth proportional to 542,880.60, 813,092.10 and 321,696.60 is: 481,816.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,880.60 : 813,092.10 = 321,696.60 : x
  2. Step 2: Convert to fraction form
    542,880.60/813,092.10 = 321,696.60/x
  3. Step 3: Cross multiply
    542,880.60x = 813,092.10 × 321,696.60
  4. Step 4: Simplify right side
    542,880.60x = 261,568,964,056.86
  5. Step 5: Solve for x
    x = 261,568,964,056.86/542,880.60
  6. Step 6: Final answer
    x = 481,816.75

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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.