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Finding the Fourth Proportional to 415,892.55, 622,672.43 and 404,228.55

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Solution

The fourth proportional to 415,892.55, 622,672.43 and 404,228.55 is: 605,209.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,892.55 : 622,672.43 = 404,228.55 : x
  2. Step 2: Convert to fraction form
    415,892.55/622,672.43 = 404,228.55/x
  3. Step 3: Cross multiply
    415,892.55x = 622,672.43 × 404,228.55
  4. Step 4: Simplify right side
    415,892.55x = 251,701,971,482.73
  5. Step 5: Solve for x
    x = 251,701,971,482.73/415,892.55
  6. Step 6: Final answer
    x = 605,209.14

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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.