Finding the Fourth Proportional to 515,675.28, 711,618.21 and 286,231.91
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Solution
The fourth proportional to 515,675.28, 711,618.21 and 286,231.91 is: 394,992.44
Step by Step Solution
- Step 1: Write the proportion equation
515,675.28 : 711,618.21 = 286,231.91 : x - Step 2: Convert to fraction form
515,675.28/711,618.21 = 286,231.91/x - Step 3: Cross multiply
515,675.28x = 711,618.21 × 286,231.91 - Step 4: Simplify right side
515,675.28x = 203,687,835,880.99 - Step 5: Solve for x
x = 203,687,835,880.99/515,675.28 - Step 6: Final answer
x = 394,992.44
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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.