Finding the Fourth Proportional to 554,239.92, 764,786.10 and 312,508.09
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Solution
The fourth proportional to 554,239.92, 764,786.10 and 312,508.09 is: 431,224.52
Step by Step Solution
- Step 1: Write the proportion equation
554,239.92 : 764,786.10 = 312,508.09 : x - Step 2: Convert to fraction form
554,239.92/764,786.10 = 312,508.09/x - Step 3: Cross multiply
554,239.92x = 764,786.10 × 312,508.09 - Step 4: Simplify right side
554,239.92x = 239,001,843,369.55 - Step 5: Solve for x
x = 239,001,843,369.55/554,239.92 - Step 6: Final answer
x = 431,224.52
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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.