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Finding the Fourth Proportional to 511,849.67, 762,520.46 and 488,820.56

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Solution

The fourth proportional to 511,849.67, 762,520.46 and 488,820.56 is: 728,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,849.67 : 762,520.46 = 488,820.56 : x
  2. Step 2: Convert to fraction form
    511,849.67/762,520.46 = 488,820.56/x
  3. Step 3: Cross multiply
    511,849.67x = 762,520.46 × 488,820.56
  4. Step 4: Simplify right side
    511,849.67x = 372,735,672,011.95
  5. Step 5: Solve for x
    x = 372,735,672,011.95/511,849.67
  6. Step 6: Final answer
    x = 728,213.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.