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Finding the Fourth Proportional to 414,513.40, 622,691.70 and 403,454.20

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Solution

The fourth proportional to 414,513.40, 622,691.70 and 403,454.20 is: 606,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,513.40 : 622,691.70 = 403,454.20 : x
  2. Step 2: Convert to fraction form
    414,513.40/622,691.70 = 403,454.20/x
  3. Step 3: Cross multiply
    414,513.40x = 622,691.70 × 403,454.20
  4. Step 4: Simplify right side
    414,513.40x = 251,227,581,670.14
  5. Step 5: Solve for x
    x = 251,227,581,670.14/414,513.40
  6. Step 6: Final answer
    x = 606,078.31

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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.