Home / 685,143.77-1,027,715.65-211,818.65

Finding the Fourth Proportional to 685,143.77, 1,027,715.65 and 211,818.65

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Solution

The fourth proportional to 685,143.77, 1,027,715.65 and 211,818.65 is: 317,727.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,143.77 : 1,027,715.65 = 211,818.65 : x
  2. Step 2: Convert to fraction form
    685,143.77/1,027,715.65 = 211,818.65/x
  3. Step 3: Cross multiply
    685,143.77x = 1,027,715.65 × 211,818.65
  4. Step 4: Simplify right side
    685,143.77x = 217,689,335,898.75
  5. Step 5: Solve for x
    x = 217,689,335,898.75/685,143.77
  6. Step 6: Final answer
    x = 317,727.97

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Similar ratio
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1.5x scale

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.