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Finding the Fourth Proportional to 415,919.30, 622,712.55 and 404,255.30

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Solution

The fourth proportional to 415,919.30, 622,712.55 and 404,255.30 is: 605,249.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,919.30 : 622,712.55 = 404,255.30 : x
  2. Step 2: Convert to fraction form
    415,919.30/622,712.55 = 404,255.30/x
  3. Step 3: Cross multiply
    415,919.30x = 622,712.55 × 404,255.30
  4. Step 4: Simplify right side
    415,919.30x = 251,734,848,714.02
  5. Step 5: Solve for x
    x = 251,734,848,714.02/415,919.30
  6. Step 6: Final answer
    x = 605,249.26

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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.