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Finding the Fourth Proportional to 2,972,736.40, 4,458,845.40 and 978,192.40

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Solution

The fourth proportional to 2,972,736.40, 4,458,845.40 and 978,192.40 is: 1,467,203.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972,736.40 : 4,458,845.40 = 978,192.40 : x
  2. Step 2: Convert to fraction form
    2,972,736.40/4,458,845.40 = 978,192.40/x
  3. Step 3: Cross multiply
    2,972,736.40x = 4,458,845.40 × 978,192.40
  4. Step 4: Simplify right side
    2,972,736.40x = 4,361,608,683,054.96
  5. Step 5: Solve for x
    x = 4,361,608,683,054.96/2,972,736.40
  6. Step 6: Final answer
    x = 1,467,203.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.