Finding the Fourth Proportional to 820,120.90, 1,231,102.95 and 633,957.70
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Solution
The fourth proportional to 820,120.90, 1,231,102.95 and 633,957.70 is: 951,648.95
Step by Step Solution
- Step 1: Write the proportion equation
820,120.90 : 1,231,102.95 = 633,957.70 : x - Step 2: Convert to fraction form
820,120.90/1,231,102.95 = 633,957.70/x - Step 3: Cross multiply
820,120.90x = 1,231,102.95 × 633,957.70 - Step 4: Simplify right side
820,120.90x = 780,467,194,645.22 - Step 5: Solve for x
x = 780,467,194,645.22/820,120.90 - Step 6: Final answer
x = 951,648.95
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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.