Finding the Fourth Proportional to 811,668.06, 1,120,103.24 and 449,107.20
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Solution
The fourth proportional to 811,668.06, 1,120,103.24 and 449,107.20 is: 619,768.66
Step by Step Solution
- Step 1: Write the proportion equation
811,668.06 : 1,120,103.24 = 449,107.20 : x - Step 2: Convert to fraction form
811,668.06/1,120,103.24 = 449,107.20/x - Step 3: Cross multiply
811,668.06x = 1,120,103.24 × 449,107.20 - Step 4: Simplify right side
811,668.06x = 503,046,427,581.79 - Step 5: Solve for x
x = 503,046,427,581.79/811,668.06 - Step 6: Final answer
x = 619,768.66
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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.