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Finding the Fourth Proportional to 393,078.80, 589,618.20 and 366,834.80

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Solution

The fourth proportional to 393,078.80, 589,618.20 and 366,834.80 is: 550,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,078.80 : 589,618.20 = 366,834.80 : x
  2. Step 2: Convert to fraction form
    393,078.80/589,618.20 = 366,834.80/x
  3. Step 3: Cross multiply
    393,078.80x = 589,618.20 × 366,834.80
  4. Step 4: Simplify right side
    393,078.80x = 216,292,474,473.36
  5. Step 5: Solve for x
    x = 216,292,474,473.36/393,078.80
  6. Step 6: Final answer
    x = 550,252.20

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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.