Finding the Fourth Proportional to 691,381.80, 1,037,072.70 and 192,745.80
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Solution
The fourth proportional to 691,381.80, 1,037,072.70 and 192,745.80 is: 289,118.70
Step by Step Solution
- Step 1: Write the proportion equation
691,381.80 : 1,037,072.70 = 192,745.80 : x - Step 2: Convert to fraction form
691,381.80/1,037,072.70 = 192,745.80/x - Step 3: Cross multiply
691,381.80x = 1,037,072.70 × 192,745.80 - Step 4: Simplify right side
691,381.80x = 199,891,407,219.66 - Step 5: Solve for x
x = 199,891,407,219.66/691,381.80 - Step 6: Final answer
x = 289,118.70
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1.5x scale
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.