Home / 684,742.80-1,027,114.20-211,366.65

Finding the Fourth Proportional to 684,742.80, 1,027,114.20 and 211,366.65

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Solution

The fourth proportional to 684,742.80, 1,027,114.20 and 211,366.65 is: 317,049.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,742.80 : 1,027,114.20 = 211,366.65 : x
  2. Step 2: Convert to fraction form
    684,742.80/1,027,114.20 = 211,366.65/x
  3. Step 3: Cross multiply
    684,742.80x = 1,027,114.20 × 211,366.65
  4. Step 4: Simplify right side
    684,742.80x = 217,097,687,621.43
  5. Step 5: Solve for x
    x = 217,097,687,621.43/684,742.80
  6. Step 6: Final answer
    x = 317,049.98

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Double scale
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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.