Finding the Fourth Proportional to 747,515.75, 1,121,234.42 and 215,015.87
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Solution
The fourth proportional to 747,515.75, 1,121,234.42 and 215,015.87 is: 322,512.52
Step by Step Solution
- Step 1: Write the proportion equation
747,515.75 : 1,121,234.42 = 215,015.87 : x - Step 2: Convert to fraction form
747,515.75/1,121,234.42 = 215,015.87/x - Step 3: Cross multiply
747,515.75x = 1,121,234.42 × 215,015.87 - Step 4: Simplify right side
747,515.75x = 241,083,187,608.99 - Step 5: Solve for x
x = 241,083,187,608.99/747,515.75 - Step 6: Final answer
x = 322,512.52
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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.