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Finding the Fourth Proportional to 8,380,990.80, 12,552,823.80 and 7,261,246.80

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Solution

The fourth proportional to 8,380,990.80, 12,552,823.80 and 7,261,246.80 is: 10,875,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380,990.80 : 12,552,823.80 = 7,261,246.80 : x
  2. Step 2: Convert to fraction form
    8,380,990.80/12,552,823.80 = 7,261,246.80/x
  3. Step 3: Cross multiply
    8,380,990.80x = 12,552,823.80 × 7,261,246.80
  4. Step 4: Simplify right side
    8,380,990.80x = 91,149,151,648,713.84
  5. Step 5: Solve for x
    x = 91,149,151,648,713.84/8,380,990.80
  6. Step 6: Final answer
    x = 10,875,701.19

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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.