Finding the Fourth Proportional to 821,566.20, 1,232,349.30 and 289,687.80
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Solution
The fourth proportional to 821,566.20, 1,232,349.30 and 289,687.80 is: 434,531.70
Step by Step Solution
- Step 1: Write the proportion equation
821,566.20 : 1,232,349.30 = 289,687.80 : x - Step 2: Convert to fraction form
821,566.20/1,232,349.30 = 289,687.80/x - Step 3: Cross multiply
821,566.20x = 1,232,349.30 × 289,687.80 - Step 4: Simplify right side
821,566.20x = 356,996,557,548.54 - Step 5: Solve for x
x = 356,996,557,548.54/821,566.20 - Step 6: Final answer
x = 434,531.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.