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Finding the Fourth Proportional to 9,876,664.80, 14,807,998.80 and 4,487,896.80

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Solution

The fourth proportional to 9,876,664.80, 14,807,998.80 and 4,487,896.80 is: 6,728,665.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876,664.80 : 14,807,998.80 = 4,487,896.80 : x
  2. Step 2: Convert to fraction form
    9,876,664.80/14,807,998.80 = 4,487,896.80/x
  3. Step 3: Cross multiply
    9,876,664.80x = 14,807,998.80 × 4,487,896.80
  4. Step 4: Simplify right side
    9,876,664.80x = 66,456,770,428,923.84
  5. Step 5: Solve for x
    x = 66,456,770,428,923.84/9,876,664.80
  6. Step 6: Final answer
    x = 6,728,665.17

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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.