Finding the Fourth Proportional to 831,286.80, 1,247,060.88 and 270,190.08
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Solution
The fourth proportional to 831,286.80, 1,247,060.88 and 270,190.08 is: 405,327.59
Step by Step Solution
- Step 1: Write the proportion equation
831,286.80 : 1,247,060.88 = 270,190.08 : x - Step 2: Convert to fraction form
831,286.80/1,247,060.88 = 270,190.08/x - Step 3: Cross multiply
831,286.80x = 1,247,060.88 × 270,190.08 - Step 4: Simplify right side
831,286.80x = 336,943,478,932.07 - Step 5: Solve for x
x = 336,943,478,932.07/831,286.80 - Step 6: Final answer
x = 405,327.59
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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.