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Finding the Fourth Proportional to 511,043.43, 762,627.84 and 448,845.15

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Solution

The fourth proportional to 511,043.43, 762,627.84 and 448,845.15 is: 669,809.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,043.43 : 762,627.84 = 448,845.15 : x
  2. Step 2: Convert to fraction form
    511,043.43/762,627.84 = 448,845.15/x
  3. Step 3: Cross multiply
    511,043.43x = 762,627.84 × 448,845.15
  4. Step 4: Simplify right side
    511,043.43x = 342,301,807,238.98
  5. Step 5: Solve for x
    x = 342,301,807,238.98/511,043.43
  6. Step 6: Final answer
    x = 669,809.62

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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.