Finding the Fourth Proportional to 722,121.97, 996,584.43 and 399,862.05
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Solution
The fourth proportional to 722,121.97, 996,584.43 and 399,862.05 is: 551,840.70
Step by Step Solution
- Step 1: Write the proportion equation
722,121.97 : 996,584.43 = 399,862.05 : x - Step 2: Convert to fraction form
722,121.97/996,584.43 = 399,862.05/x - Step 3: Cross multiply
722,121.97x = 996,584.43 × 399,862.05 - Step 4: Simplify right side
722,121.97x = 398,496,291,178.57 - Step 5: Solve for x
x = 398,496,291,178.57/722,121.97 - Step 6: Final answer
x = 551,840.70
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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.