Finding the Fourth Proportional to 715,594.19, 987,526.15 and 393,311.79
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Solution
The fourth proportional to 715,594.19, 987,526.15 and 393,311.79 is: 542,773.66
Step by Step Solution
- Step 1: Write the proportion equation
715,594.19 : 987,526.15 = 393,311.79 : x - Step 2: Convert to fraction form
715,594.19/987,526.15 = 393,311.79/x - Step 3: Cross multiply
715,594.19x = 987,526.15 × 393,311.79 - Step 4: Simplify right side
715,594.19x = 388,405,676,745.03 - Step 5: Solve for x
x = 388,405,676,745.03/715,594.19 - Step 6: Final answer
x = 542,773.66
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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.