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Finding the Fourth Proportional to 408,120.20, 611,582.70 and 366,000.20

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Solution

The fourth proportional to 408,120.20, 611,582.70 and 366,000.20 is: 548,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,120.20 : 611,582.70 = 366,000.20 : x
  2. Step 2: Convert to fraction form
    408,120.20/611,582.70 = 366,000.20/x
  3. Step 3: Cross multiply
    408,120.20x = 611,582.70 × 366,000.20
  4. Step 4: Simplify right side
    408,120.20x = 223,839,390,516.54
  5. Step 5: Solve for x
    x = 223,839,390,516.54/408,120.20
  6. Step 6: Final answer
    x = 548,464.38

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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.