Finding the Fourth Proportional to 1,288,123.24, 1,777,527.81 and 715,163.26
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Solution
The fourth proportional to 1,288,123.24, 1,777,527.81 and 715,163.26 is: 986,879.63
Step by Step Solution
- Step 1: Write the proportion equation
1,288,123.24 : 1,777,527.81 = 715,163.26 : x - Step 2: Convert to fraction form
1,288,123.24/1,777,527.81 = 715,163.26/x - Step 3: Cross multiply
1,288,123.24x = 1,777,527.81 × 715,163.26 - Step 4: Simplify right side
1,288,123.24x = 1,271,222,583,340.26 - Step 5: Solve for x
x = 1,271,222,583,340.26/1,288,123.24 - Step 6: Final answer
x = 986,879.63
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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.