Home / 684,738.20-1,027,107.30-285,246.20

Finding the Fourth Proportional to 684,738.20, 1,027,107.30 and 285,246.20

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Solution

The fourth proportional to 684,738.20, 1,027,107.30 and 285,246.20 is: 427,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,738.20 : 1,027,107.30 = 285,246.20 : x
  2. Step 2: Convert to fraction form
    684,738.20/1,027,107.30 = 285,246.20/x
  3. Step 3: Cross multiply
    684,738.20x = 1,027,107.30 × 285,246.20
  4. Step 4: Simplify right side
    684,738.20x = 292,978,454,317.26
  5. Step 5: Solve for x
    x = 292,978,454,317.26/684,738.20
  6. Step 6: Final answer
    x = 427,869.30

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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.