Finding the Fourth Proportional to 656,187.75, 905,539.10 and 354,381.75
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Solution
The fourth proportional to 656,187.75, 905,539.10 and 354,381.75 is: 489,046.82
Step by Step Solution
- Step 1: Write the proportion equation
656,187.75 : 905,539.10 = 354,381.75 : x - Step 2: Convert to fraction form
656,187.75/905,539.10 = 354,381.75/x - Step 3: Cross multiply
656,187.75x = 905,539.10 × 354,381.75 - Step 4: Simplify right side
656,187.75x = 320,906,529,179.52 - Step 5: Solve for x
x = 320,906,529,179.52/656,187.75 - Step 6: Final answer
x = 489,046.82
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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.