Finding the Fourth Proportional to 811,846.19, 1,120,349.92 and 449,295.05
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Solution
The fourth proportional to 811,846.19, 1,120,349.92 and 449,295.05 is: 620,028.37
Step by Step Solution
- Step 1: Write the proportion equation
811,846.19 : 1,120,349.92 = 449,295.05 : x - Step 2: Convert to fraction form
811,846.19/1,120,349.92 = 449,295.05/x - Step 3: Cross multiply
811,846.19x = 1,120,349.92 × 449,295.05 - Step 4: Simplify right side
811,846.19x = 503,367,675,001.53 - Step 5: Solve for x
x = 503,367,675,001.53/811,846.19 - Step 6: Final answer
x = 620,028.37
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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.