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Finding the Fourth Proportional to 7,168,800, 9,892,944 and 3,949,605.12

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Solution

The fourth proportional to 7,168,800, 9,892,944 and 3,949,605.12 is: 5,450,455.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168,800 : 9,892,944 = 3,949,605.12 : x
  2. Step 2: Convert to fraction form
    7,168,800/9,892,944 = 3,949,605.12/x
  3. Step 3: Cross multiply
    7,168,800x = 9,892,944 × 3,949,605.12
  4. Step 4: Simplify right side
    7,168,800x = 39,073,222,274,273.28
  5. Step 5: Solve for x
    x = 39,073,222,274,273.28/7,168,800
  6. Step 6: Final answer
    x = 5,450,455.07

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.