Finding the Fourth Proportional to 811,760.84, 1,120,231.30 and 449,199.96
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Solution
The fourth proportional to 811,760.84, 1,120,231.30 and 449,199.96 is: 619,896.69
Step by Step Solution
- Step 1: Write the proportion equation
811,760.84 : 1,120,231.30 = 449,199.96 : x - Step 2: Convert to fraction form
811,760.84/1,120,231.30 = 449,199.96/x - Step 3: Cross multiply
811,760.84x = 1,120,231.30 × 449,199.96 - Step 4: Simplify right side
811,760.84x = 503,207,855,150.75 - Step 5: Solve for x
x = 503,207,855,150.75/811,760.84 - Step 6: Final answer
x = 619,896.69
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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.