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Finding the Fourth Proportional to 521,939.55, 782,349.59 and 341,956.97

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Solution

The fourth proportional to 521,939.55, 782,349.59 and 341,956.97 is: 512,568.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,939.55 : 782,349.59 = 341,956.97 : x
  2. Step 2: Convert to fraction form
    521,939.55/782,349.59 = 341,956.97/x
  3. Step 3: Cross multiply
    521,939.55x = 782,349.59 × 341,956.97
  4. Step 4: Simplify right side
    521,939.55x = 267,529,891,030.23
  5. Step 5: Solve for x
    x = 267,529,891,030.23/521,939.55
  6. Step 6: Final answer
    x = 512,568.73

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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.