Home / 685,142.64-1,027,713.96-211,817.52

Finding the Fourth Proportional to 685,142.64, 1,027,713.96 and 211,817.52

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Solution

The fourth proportional to 685,142.64, 1,027,713.96 and 211,817.52 is: 317,726.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,142.64 : 1,027,713.96 = 211,817.52 : x
  2. Step 2: Convert to fraction form
    685,142.64/1,027,713.96 = 211,817.52/x
  3. Step 3: Cross multiply
    685,142.64x = 1,027,713.96 × 211,817.52
  4. Step 4: Simplify right side
    685,142.64x = 217,687,822,276.58
  5. Step 5: Solve for x
    x = 217,687,822,276.58/685,142.64
  6. Step 6: Final answer
    x = 317,726.28

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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.