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Finding the Fourth Proportional to 552,403.37, 762,421.46 and 345,767.64

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Solution

The fourth proportional to 552,403.37, 762,421.46 and 345,767.64 is: 477,224.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,403.37 : 762,421.46 = 345,767.64 : x
  2. Step 2: Convert to fraction form
    552,403.37/762,421.46 = 345,767.64/x
  3. Step 3: Cross multiply
    552,403.37x = 762,421.46 × 345,767.64
  4. Step 4: Simplify right side
    552,403.37x = 263,620,667,180.72
  5. Step 5: Solve for x
    x = 263,620,667,180.72/552,403.37
  6. Step 6: Final answer
    x = 477,224.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.