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Finding the Fourth Proportional to 408,330.80, 611,329.80 and 366,340.40

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Solution

The fourth proportional to 408,330.80, 611,329.80 and 366,340.40 is: 548,464.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,330.80 : 611,329.80 = 366,340.40 : x
  2. Step 2: Convert to fraction form
    408,330.80/611,329.80 = 366,340.40/x
  3. Step 3: Cross multiply
    408,330.80x = 611,329.80 × 366,340.40
  4. Step 4: Simplify right side
    408,330.80x = 223,954,803,463.92
  5. Step 5: Solve for x
    x = 223,954,803,463.92/408,330.80
  6. Step 6: Final answer
    x = 548,464.15

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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.