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Finding the Fourth Proportional to 414,456.40, 622,606.20 and 403,397.20

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Solution

The fourth proportional to 414,456.40, 622,606.20 and 403,397.20 is: 605,992.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,456.40 : 622,606.20 = 403,397.20 : x
  2. Step 2: Convert to fraction form
    414,456.40/622,606.20 = 403,397.20/x
  3. Step 3: Cross multiply
    414,456.40x = 622,606.20 × 403,397.20
  4. Step 4: Simplify right side
    414,456.40x = 251,157,597,782.64
  5. Step 5: Solve for x
    x = 251,157,597,782.64/414,456.40
  6. Step 6: Final answer
    x = 605,992.81

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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.