Finding the Fourth Proportional to 431,981.15, 647,446.39 and 305,657.80
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Solution
The fourth proportional to 431,981.15, 647,446.39 and 305,657.80 is: 458,114.99
Step by Step Solution
- Step 1: Write the proportion equation
431,981.15 : 647,446.39 = 305,657.80 : x - Step 2: Convert to fraction form
431,981.15/647,446.39 = 305,657.80/x - Step 3: Cross multiply
431,981.15x = 647,446.39 × 305,657.80 - Step 4: Simplify right side
431,981.15x = 197,897,039,185.34 - Step 5: Solve for x
x = 197,897,039,185.34/431,981.15 - Step 6: Final answer
x = 458,114.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.