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Finding the Fourth Proportional to 7,212,449.49, 9,953,197.70 and 3,949,479.51

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Solution

The fourth proportional to 7,212,449.49, 9,953,197.70 and 3,949,479.51 is: 5,450,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212,449.49 : 9,953,197.70 = 3,949,479.51 : x
  2. Step 2: Convert to fraction form
    7,212,449.49/9,953,197.70 = 3,949,479.51/x
  3. Step 3: Cross multiply
    7,212,449.49x = 9,953,197.70 × 3,949,479.51
  4. Step 4: Simplify right side
    7,212,449.49x = 39,309,950,355,381.73
  5. Step 5: Solve for x
    x = 39,309,950,355,381.73/7,212,449.49
  6. Step 6: Final answer
    x = 5,450,291.25

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