Finding the Fourth Proportional to 720,941.12, 994,888.36 and 398,644.12
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Solution
The fourth proportional to 720,941.12, 994,888.36 and 398,644.12 is: 550,123.14
Step by Step Solution
- Step 1: Write the proportion equation
720,941.12 : 994,888.36 = 398,644.12 : x - Step 2: Convert to fraction form
720,941.12/994,888.36 = 398,644.12/x - Step 3: Cross multiply
720,941.12x = 994,888.36 × 398,644.12 - Step 4: Simplify right side
720,941.12x = 396,606,394,770.44 - Step 5: Solve for x
x = 396,606,394,770.44/720,941.12 - Step 6: Final answer
x = 550,123.14
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1.5x scale
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.