Finding the Fourth Proportional to 394,065,990.48, 543,720,847.68 and 235,265,207.52
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Solution
The fourth proportional to 394,065,990.48, 543,720,847.68 and 235,265,207.52 is: 324,612,123.74
Step by Step Solution
- Step 1: Write the proportion equation
394,065,990.48 : 543,720,847.68 = 235,265,207.52 : x - Step 2: Convert to fraction form
394,065,990.48/543,720,847.68 = 235,265,207.52/x - Step 3: Cross multiply
394,065,990.48x = 543,720,847.68 × 235,265,207.52 - Step 4: Simplify right side
394,065,990.48x = 127,918,598,062,385,504 - Step 5: Solve for x
x = 127,918,598,062,385,504/394,065,990.48 - Step 6: Final answer
x = 324,612,123.74
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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.