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Finding the Fourth Proportional to 414,145.60, 621,218.40 and 366,906.40

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Solution

The fourth proportional to 414,145.60, 621,218.40 and 366,906.40 is: 550,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,145.60 : 621,218.40 = 366,906.40 : x
  2. Step 2: Convert to fraction form
    414,145.60/621,218.40 = 366,906.40/x
  3. Step 3: Cross multiply
    414,145.60x = 621,218.40 × 366,906.40
  4. Step 4: Simplify right side
    414,145.60x = 227,929,006,757.76
  5. Step 5: Solve for x
    x = 227,929,006,757.76/414,145.60
  6. Step 6: Final answer
    x = 550,359.60

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Double scale
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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.