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Finding the Fourth Proportional to 457,310.60, 685,965.90 and 448,562.60

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Solution

The fourth proportional to 457,310.60, 685,965.90 and 448,562.60 is: 672,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,310.60 : 685,965.90 = 448,562.60 : x
  2. Step 2: Convert to fraction form
    457,310.60/685,965.90 = 448,562.60/x
  3. Step 3: Cross multiply
    457,310.60x = 685,965.90 × 448,562.60
  4. Step 4: Simplify right side
    457,310.60x = 307,698,647,615.34
  5. Step 5: Solve for x
    x = 307,698,647,615.34/457,310.60
  6. Step 6: Final answer
    x = 672,843.90

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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.