Home / 8,378,906.10-12,568,359.15-5,509,124.70

Finding the Fourth Proportional to 8,378,906.10, 12,568,359.15 and 5,509,124.70

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Solution

The fourth proportional to 8,378,906.10, 12,568,359.15 and 5,509,124.70 is: 8,263,687.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378,906.10 : 12,568,359.15 = 5,509,124.70 : x
  2. Step 2: Convert to fraction form
    8,378,906.10/12,568,359.15 = 5,509,124.70/x
  3. Step 3: Cross multiply
    8,378,906.10x = 12,568,359.15 × 5,509,124.70
  4. Step 4: Simplify right side
    8,378,906.10x = 69,240,657,831,736.01
  5. Step 5: Solve for x
    x = 69,240,657,831,736.01/8,378,906.10
  6. Step 6: Final answer
    x = 8,263,687.05

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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.