Finding the Fourth Proportional to 2,231,135.88, 3,078,991.26 and 1,212,540.60
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Solution
The fourth proportional to 2,231,135.88, 3,078,991.26 and 1,212,540.60 is: 1,673,318.93
Step by Step Solution
- Step 1: Write the proportion equation
2,231,135.88 : 3,078,991.26 = 1,212,540.60 : x - Step 2: Convert to fraction form
2,231,135.88/3,078,991.26 = 1,212,540.60/x - Step 3: Cross multiply
2,231,135.88x = 3,078,991.26 × 1,212,540.60 - Step 4: Simplify right side
2,231,135.88x = 3,733,401,909,795.16 - Step 5: Solve for x
x = 3,733,401,909,795.16/2,231,135.88 - Step 6: Final answer
x = 1,673,318.93
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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.