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Finding the Fourth Proportional to 684,676.80, 1,027,015.20 and 365,812.20

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Solution

The fourth proportional to 684,676.80, 1,027,015.20 and 365,812.20 is: 548,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,676.80 : 1,027,015.20 = 365,812.20 : x
  2. Step 2: Convert to fraction form
    684,676.80/1,027,015.20 = 365,812.20/x
  3. Step 3: Cross multiply
    684,676.80x = 1,027,015.20 × 365,812.20
  4. Step 4: Simplify right side
    684,676.80x = 375,694,689,745.44
  5. Step 5: Solve for x
    x = 375,694,689,745.44/684,676.80
  6. Step 6: Final answer
    x = 548,718.30

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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.