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Finding the Fourth Proportional to 519,474.80, 779,212.20 and 331,468.40

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Solution

The fourth proportional to 519,474.80, 779,212.20 and 331,468.40 is: 497,202.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,474.80 : 779,212.20 = 331,468.40 : x
  2. Step 2: Convert to fraction form
    519,474.80/779,212.20 = 331,468.40/x
  3. Step 3: Cross multiply
    519,474.80x = 779,212.20 × 331,468.40
  4. Step 4: Simplify right side
    519,474.80x = 258,284,221,194.48
  5. Step 5: Solve for x
    x = 258,284,221,194.48/519,474.80
  6. Step 6: Final answer
    x = 497,202.60

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Similar ratio
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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.