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Finding the Fourth Proportional to 6,642,906.70, 9,964,360.05 and 2,155,182.70

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Solution

The fourth proportional to 6,642,906.70, 9,964,360.05 and 2,155,182.70 is: 3,232,774.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,906.70 : 9,964,360.05 = 2,155,182.70 : x
  2. Step 2: Convert to fraction form
    6,642,906.70/9,964,360.05 = 2,155,182.70/x
  3. Step 3: Cross multiply
    6,642,906.70x = 9,964,360.05 × 2,155,182.70
  4. Step 4: Simplify right side
    6,642,906.70x = 21,475,016,396,331.14
  5. Step 5: Solve for x
    x = 21,475,016,396,331.14/6,642,906.70
  6. Step 6: Final answer
    x = 3,232,774.05

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Double scale
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Similar ratio
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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.