Finding the Fourth Proportional to 515,951.30, 711,988.84 and 286,523.14
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Solution
The fourth proportional to 515,951.30, 711,988.84 and 286,523.14 is: 395,388.63
Step by Step Solution
- Step 1: Write the proportion equation
515,951.30 : 711,988.84 = 286,523.14 : x - Step 2: Convert to fraction form
515,951.30/711,988.84 = 286,523.14/x - Step 3: Cross multiply
515,951.30x = 711,988.84 × 286,523.14 - Step 4: Simplify right side
515,951.30x = 204,001,278,081.76 - Step 5: Solve for x
x = 204,001,278,081.76/515,951.30 - Step 6: Final answer
x = 395,388.63
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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.