Finding the Fourth Proportional to 721,119.72, 1,081,706.58 and 215,687.28
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Solution
The fourth proportional to 721,119.72, 1,081,706.58 and 215,687.28 is: 323,539.00
Step by Step Solution
- Step 1: Write the proportion equation
721,119.72 : 1,081,706.58 = 215,687.28 : x - Step 2: Convert to fraction form
721,119.72/1,081,706.58 = 215,687.28/x - Step 3: Cross multiply
721,119.72x = 1,081,706.58 × 215,687.28 - Step 4: Simplify right side
721,119.72x = 233,310,349,998.30 - Step 5: Solve for x
x = 233,310,349,998.30/721,119.72 - Step 6: Final answer
x = 323,539.00
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.