Finding the Fourth Proportional to 811,876.66, 1,120,362.09 and 449,315.74
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Solution
The fourth proportional to 811,876.66, 1,120,362.09 and 449,315.74 is: 620,040.39
Step by Step Solution
- Step 1: Write the proportion equation
811,876.66 : 1,120,362.09 = 449,315.74 : x - Step 2: Convert to fraction form
811,876.66/1,120,362.09 = 449,315.74/x - Step 3: Cross multiply
811,876.66x = 1,120,362.09 × 449,315.74 - Step 4: Simplify right side
811,876.66x = 503,396,321,536.30 - Step 5: Solve for x
x = 503,396,321,536.30/811,876.66 - Step 6: Final answer
x = 620,040.39
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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.