Finding the Fourth Proportional to 515,489.64, 711,351.01 and 286,044.18
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Solution
The fourth proportional to 515,489.64, 711,351.01 and 286,044.18 is: 394,727.27
Step by Step Solution
- Step 1: Write the proportion equation
515,489.64 : 711,351.01 = 286,044.18 : x - Step 2: Convert to fraction form
515,489.64/711,351.01 = 286,044.18/x - Step 3: Cross multiply
515,489.64x = 711,351.01 × 286,044.18 - Step 4: Simplify right side
515,489.64x = 203,477,816,347.62 - Step 5: Solve for x
x = 203,477,816,347.62/515,489.64 - Step 6: Final answer
x = 394,727.27
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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.