Finding the Fourth Proportional to 811,852.20, 1,120,358.21 and 449,301.06
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Solution
The fourth proportional to 811,852.20, 1,120,358.21 and 449,301.06 is: 620,036.66
Step by Step Solution
- Step 1: Write the proportion equation
811,852.20 : 1,120,358.21 = 449,301.06 : x - Step 2: Convert to fraction form
811,852.20/1,120,358.21 = 449,301.06/x - Step 3: Cross multiply
811,852.20x = 1,120,358.21 × 449,301.06 - Step 4: Simplify right side
811,852.20x = 503,378,129,086.20 - Step 5: Solve for x
x = 503,378,129,086.20/811,852.20 - Step 6: Final answer
x = 620,036.66
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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.