Home / 685,143.64-1,027,715.46-211,818.52

Finding the Fourth Proportional to 685,143.64, 1,027,715.46 and 211,818.52

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Solution

The fourth proportional to 685,143.64, 1,027,715.46 and 211,818.52 is: 317,727.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,143.64 : 1,027,715.46 = 211,818.52 : x
  2. Step 2: Convert to fraction form
    685,143.64/1,027,715.46 = 211,818.52/x
  3. Step 3: Cross multiply
    685,143.64x = 1,027,715.46 × 211,818.52
  4. Step 4: Simplify right side
    685,143.64x = 217,689,167,718.32
  5. Step 5: Solve for x
    x = 217,689,167,718.32/685,143.64
  6. Step 6: Final answer
    x = 317,727.78

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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.