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Finding the Fourth Proportional to 7,212,807.56, 9,953,796.84 and 3,949,570.28

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Solution

The fourth proportional to 7,212,807.56, 9,953,796.84 and 3,949,570.28 is: 5,450,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212,807.56 : 9,953,796.84 = 3,949,570.28 : x
  2. Step 2: Convert to fraction form
    7,212,807.56/9,953,796.84 = 3,949,570.28/x
  3. Step 3: Cross multiply
    7,212,807.56x = 9,953,796.84 × 3,949,570.28
  4. Step 4: Simplify right side
    7,212,807.56x = 39,313,220,172,421.91
  5. Step 5: Solve for x
    x = 39,313,220,172,421.91/7,212,807.56
  6. Step 6: Final answer
    x = 5,450,474.01

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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.