Finding the Fourth Proportional to 512,609.40, 707,387.26 and 283,161.74
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Solution
The fourth proportional to 512,609.40, 707,387.26 and 283,161.74 is: 390,755.63
Step by Step Solution
- Step 1: Write the proportion equation
512,609.40 : 707,387.26 = 283,161.74 : x - Step 2: Convert to fraction form
512,609.40/707,387.26 = 283,161.74/x - Step 3: Cross multiply
512,609.40x = 707,387.26 × 283,161.74 - Step 4: Simplify right side
512,609.40x = 200,305,009,674.53 - Step 5: Solve for x
x = 200,305,009,674.53/512,609.40 - Step 6: Final answer
x = 390,755.63
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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.