Finding the Fourth Proportional to 428,408.19, 591,471.97 and 275,711.55
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Solution
The fourth proportional to 428,408.19, 591,471.97 and 275,711.55 is: 380,654.84
Step by Step Solution
- Step 1: Write the proportion equation
428,408.19 : 591,471.97 = 275,711.55 : x - Step 2: Convert to fraction form
428,408.19/591,471.97 = 275,711.55/x - Step 3: Cross multiply
428,408.19x = 591,471.97 × 275,711.55 - Step 4: Simplify right side
428,408.19x = 163,075,652,273.83 - Step 5: Solve for x
x = 163,075,652,273.83/428,408.19 - Step 6: Final answer
x = 380,654.84
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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.