Finding the Fourth Proportional to 722,190.87, 996,611.19 and 399,894.05
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Solution
The fourth proportional to 722,190.87, 996,611.19 and 399,894.05 is: 551,847.03
Step by Step Solution
- Step 1: Write the proportion equation
722,190.87 : 996,611.19 = 399,894.05 : x - Step 2: Convert to fraction form
722,190.87/996,611.19 = 399,894.05/x - Step 3: Cross multiply
722,190.87x = 996,611.19 × 399,894.05 - Step 4: Simplify right side
722,190.87x = 398,538,885,044.42 - Step 5: Solve for x
x = 398,538,885,044.42/722,190.87 - Step 6: Final answer
x = 551,847.03
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1.5x scale
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.