Finding the Fourth Proportional to 861,596.40, 1,292,393.99 and 387,728.18
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Solution
The fourth proportional to 861,596.40, 1,292,393.99 and 387,728.18 is: 581,591.99
Step by Step Solution
- Step 1: Write the proportion equation
861,596.40 : 1,292,393.99 = 387,728.18 : x - Step 2: Convert to fraction form
861,596.40/1,292,393.99 = 387,728.18/x - Step 3: Cross multiply
861,596.40x = 1,292,393.99 × 387,728.18 - Step 4: Simplify right side
861,596.40x = 501,097,561,185.03 - Step 5: Solve for x
x = 501,097,561,185.03/861,596.40 - Step 6: Final answer
x = 581,591.99
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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.