Finding the Fourth Proportional to 515,951.26, 711,988.77 and 286,523.09
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Solution
The fourth proportional to 515,951.26, 711,988.77 and 286,523.09 is: 395,388.55
Step by Step Solution
- Step 1: Write the proportion equation
515,951.26 : 711,988.77 = 286,523.09 : x - Step 2: Convert to fraction form
515,951.26/711,988.77 = 286,523.09/x - Step 3: Cross multiply
515,951.26x = 711,988.77 × 286,523.09 - Step 4: Simplify right side
515,951.26x = 204,001,222,425.70 - Step 5: Solve for x
x = 204,001,222,425.70/515,951.26 - Step 6: Final answer
x = 395,388.55
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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.