Finding the Fourth Proportional to 5,781,768.58, 7,978,571.85 and 3,168,257.14
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Solution
The fourth proportional to 5,781,768.58, 7,978,571.85 and 3,168,257.14 is: 4,372,047.56
Step by Step Solution
- Step 1: Write the proportion equation
5,781,768.58 : 7,978,571.85 = 3,168,257.14 : x - Step 2: Convert to fraction form
5,781,768.58/7,978,571.85 = 3,168,257.14/x - Step 3: Cross multiply
5,781,768.58x = 7,978,571.85 × 3,168,257.14 - Step 4: Simplify right side
5,781,768.58x = 25,278,167,230,765.51 - Step 5: Solve for x
x = 25,278,167,230,765.51/5,781,768.58 - Step 6: Final answer
x = 4,372,047.56
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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.