Finding the Fourth Proportional to 721,626.66, 1,081,864.08 and 342,357.12
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Solution
The fourth proportional to 721,626.66, 1,081,864.08 and 342,357.12 is: 513,262.45
Step by Step Solution
- Step 1: Write the proportion equation
721,626.66 : 1,081,864.08 = 342,357.12 : x - Step 2: Convert to fraction form
721,626.66/1,081,864.08 = 342,357.12/x - Step 3: Cross multiply
721,626.66x = 1,081,864.08 × 342,357.12 - Step 4: Simplify right side
721,626.66x = 370,383,870,660.25 - Step 5: Solve for x
x = 370,383,870,660.25/721,626.66 - Step 6: Final answer
x = 513,262.45
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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.