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Finding the Fourth Proportional to 415,066.93, 622,600.56 and 320,435.27

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Solution

The fourth proportional to 415,066.93, 622,600.56 and 320,435.27 is: 480,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,066.93 : 622,600.56 = 320,435.27 : x
  2. Step 2: Convert to fraction form
    415,066.93/622,600.56 = 320,435.27/x
  3. Step 3: Cross multiply
    415,066.93x = 622,600.56 × 320,435.27
  4. Step 4: Simplify right side
    415,066.93x = 199,503,180,102.25
  5. Step 5: Solve for x
    x = 199,503,180,102.25/415,066.93
  6. Step 6: Final answer
    x = 480,653.04

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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.