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Finding the Fourth Proportional to 9,872,992.80, 14,809,489.20 and 8,278,669.80

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Solution

The fourth proportional to 9,872,992.80, 14,809,489.20 and 8,278,669.80 is: 12,418,004.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,872,992.80 : 14,809,489.20 = 8,278,669.80 : x
  2. Step 2: Convert to fraction form
    9,872,992.80/14,809,489.20 = 8,278,669.80/x
  3. Step 3: Cross multiply
    9,872,992.80x = 14,809,489.20 × 8,278,669.80
  4. Step 4: Simplify right side
    9,872,992.80x = 122,602,870,993,466.16
  5. Step 5: Solve for x
    x = 122,602,870,993,466.16/9,872,992.80
  6. Step 6: Final answer
    x = 12,418,004.70

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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.