Finding the Fourth Proportional to 1,643,453.11, 2,267,922.94 and 918,306.78
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Solution
The fourth proportional to 1,643,453.11, 2,267,922.94 and 918,306.78 is: 1,267,239.69
Step by Step Solution
- Step 1: Write the proportion equation
1,643,453.11 : 2,267,922.94 = 918,306.78 : x - Step 2: Convert to fraction form
1,643,453.11/2,267,922.94 = 918,306.78/x - Step 3: Cross multiply
1,643,453.11x = 2,267,922.94 × 918,306.78 - Step 4: Simplify right side
1,643,453.11x = 2,082,649,012,319.53 - Step 5: Solve for x
x = 2,082,649,012,319.53/1,643,453.11 - Step 6: Final answer
x = 1,267,239.69
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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.