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Finding the Fourth Proportional to 571,517.10, 857,789.60 and 305,505

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Solution

The fourth proportional to 571,517.10, 857,789.60 and 305,505 is: 458,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,517.10 : 857,789.60 = 305,505 : x
  2. Step 2: Convert to fraction form
    571,517.10/857,789.60 = 305,505/x
  3. Step 3: Cross multiply
    571,517.10x = 857,789.60 × 305,505
  4. Step 4: Simplify right side
    571,517.10x = 262,059,010,220.48
  5. Step 5: Solve for x
    x = 262,059,010,220.48/571,517.10
  6. Step 6: Final answer
    x = 458,532.23

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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.