Finding the Fourth Proportional to 686,104.92, 947,286.84 and 428,374.26
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Solution
The fourth proportional to 686,104.92, 947,286.84 and 428,374.26 is: 591,444.96
Step by Step Solution
- Step 1: Write the proportion equation
686,104.92 : 947,286.84 = 428,374.26 : x - Step 2: Convert to fraction form
686,104.92/947,286.84 = 428,374.26/x - Step 3: Cross multiply
686,104.92x = 947,286.84 × 428,374.26 - Step 4: Simplify right side
686,104.92x = 405,793,299,092.74 - Step 5: Solve for x
x = 405,793,299,092.74/686,104.92 - Step 6: Final answer
x = 591,444.96
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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.