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Finding the Fourth Proportional to 414,979.20, 622,468.80 and 414,979.20

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Solution

The fourth proportional to 414,979.20, 622,468.80 and 414,979.20 is: 622,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,979.20 : 622,468.80 = 414,979.20 : x
  2. Step 2: Convert to fraction form
    414,979.20/622,468.80 = 414,979.20/x
  3. Step 3: Cross multiply
    414,979.20x = 622,468.80 × 414,979.20
  4. Step 4: Simplify right side
    414,979.20x = 258,311,604,648.96
  5. Step 5: Solve for x
    x = 258,311,604,648.96/414,979.20
  6. Step 6: Final answer
    x = 622,468.80

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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.