Finding the Fourth Proportional to 656,463.75, 905,919.99 and 354,657.75
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Solution
The fourth proportional to 656,463.75, 905,919.99 and 354,657.75 is: 489,427.70
Step by Step Solution
- Step 1: Write the proportion equation
656,463.75 : 905,919.99 = 354,657.75 : x - Step 2: Convert to fraction form
656,463.75/905,919.99 = 354,657.75/x - Step 3: Cross multiply
656,463.75x = 905,919.99 × 354,657.75 - Step 4: Simplify right side
656,463.75x = 321,291,545,333.42 - Step 5: Solve for x
x = 321,291,545,333.42/656,463.75 - Step 6: Final answer
x = 489,427.70
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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.