Finding the Fourth Proportional to 811,855.20, 1,120,362.36 and 449,304.06
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Solution
The fourth proportional to 811,855.20, 1,120,362.36 and 449,304.06 is: 620,040.81
Step by Step Solution
- Step 1: Write the proportion equation
811,855.20 : 1,120,362.36 = 449,304.06 : x - Step 2: Convert to fraction form
811,855.20/1,120,362.36 = 449,304.06/x - Step 3: Cross multiply
811,855.20x = 1,120,362.36 × 449,304.06 - Step 4: Simplify right side
811,855.20x = 503,383,357,019.18 - Step 5: Solve for x
x = 503,383,357,019.18/811,855.20 - Step 6: Final answer
x = 620,040.81
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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.