Finding the Fourth Proportional to 5,181,999.21, 7,151,118.84 and 2,858,989.68
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Solution
The fourth proportional to 5,181,999.21, 7,151,118.84 and 2,858,989.68 is: 3,945,383.65
Step by Step Solution
- Step 1: Write the proportion equation
5,181,999.21 : 7,151,118.84 = 2,858,989.68 : x - Step 2: Convert to fraction form
5,181,999.21/7,151,118.84 = 2,858,989.68/x - Step 3: Cross multiply
5,181,999.21x = 7,151,118.84 × 2,858,989.68 - Step 4: Simplify right side
5,181,999.21x = 20,444,974,964,013.57 - Step 5: Solve for x
x = 20,444,974,964,013.57/5,181,999.21 - Step 6: Final answer
x = 3,945,383.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.