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Finding the Fourth Proportional to 8,663,288.90, 12,980,936.55 and 5,462,687.30

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Solution

The fourth proportional to 8,663,288.90, 12,980,936.55 and 5,462,687.30 is: 8,185,205.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663,288.90 : 12,980,936.55 = 5,462,687.30 : x
  2. Step 2: Convert to fraction form
    8,663,288.90/12,980,936.55 = 5,462,687.30/x
  3. Step 3: Cross multiply
    8,663,288.90x = 12,980,936.55 × 5,462,687.30
  4. Step 4: Simplify right side
    8,663,288.90x = 70,910,797,233,790.81
  5. Step 5: Solve for x
    x = 70,910,797,233,790.81/8,663,288.90
  6. Step 6: Final answer
    x = 8,185,205.19

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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.