Home / 685,145.14-1,027,717.71-211,820.02

Finding the Fourth Proportional to 685,145.14, 1,027,717.71 and 211,820.02

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Solution

The fourth proportional to 685,145.14, 1,027,717.71 and 211,820.02 is: 317,730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,145.14 : 1,027,717.71 = 211,820.02 : x
  2. Step 2: Convert to fraction form
    685,145.14/1,027,717.71 = 211,820.02/x
  3. Step 3: Cross multiply
    685,145.14x = 1,027,717.71 × 211,820.02
  4. Step 4: Simplify right side
    685,145.14x = 217,691,185,886.55
  5. Step 5: Solve for x
    x = 217,691,185,886.55/685,145.14
  6. Step 6: Final answer
    x = 317,730.03

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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.