Finding the Fourth Proportional to 727,630.80, 1,091,446.20 and 664,645.20
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Solution
The fourth proportional to 727,630.80, 1,091,446.20 and 664,645.20 is: 996,967.80
Step by Step Solution
- Step 1: Write the proportion equation
727,630.80 : 1,091,446.20 = 664,645.20 : x - Step 2: Convert to fraction form
727,630.80/1,091,446.20 = 664,645.20/x - Step 3: Cross multiply
727,630.80x = 1,091,446.20 × 664,645.20 - Step 4: Simplify right side
727,630.80x = 725,424,477,888.24 - Step 5: Solve for x
x = 725,424,477,888.24/727,630.80 - Step 6: Final answer
x = 996,967.80
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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.