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Finding the Fourth Proportional to 533,998.80, 800,998.20 and 515,336.40

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Solution

The fourth proportional to 533,998.80, 800,998.20 and 515,336.40 is: 773,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,998.80 : 800,998.20 = 515,336.40 : x
  2. Step 2: Convert to fraction form
    533,998.80/800,998.20 = 515,336.40/x
  3. Step 3: Cross multiply
    533,998.80x = 800,998.20 × 515,336.40
  4. Step 4: Simplify right side
    533,998.80x = 412,783,528,794.48
  5. Step 5: Solve for x
    x = 412,783,528,794.48/533,998.80
  6. Step 6: Final answer
    x = 773,004.60

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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.