Finding the Fourth Proportional to 722,105.43, 996,536.62 and 399,815.53
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Solution
The fourth proportional to 722,105.43, 996,536.62 and 399,815.53 is: 551,762.66
Step by Step Solution
- Step 1: Write the proportion equation
722,105.43 : 996,536.62 = 399,815.53 : x - Step 2: Convert to fraction form
722,105.43/996,536.62 = 399,815.53/x - Step 3: Cross multiply
722,105.43x = 996,536.62 × 399,815.53 - Step 4: Simplify right side
722,105.43x = 398,430,811,907.03 - Step 5: Solve for x
x = 398,430,811,907.03/722,105.43 - Step 6: Final answer
x = 551,762.66
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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.