Finding the Fourth Proportional to 727,642.80, 1,091,464.20 and 664,657.20
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Solution
The fourth proportional to 727,642.80, 1,091,464.20 and 664,657.20 is: 996,985.80
Step by Step Solution
- Step 1: Write the proportion equation
727,642.80 : 1,091,464.20 = 664,657.20 : x - Step 2: Convert to fraction form
727,642.80/1,091,464.20 = 664,657.20/x - Step 3: Cross multiply
727,642.80x = 1,091,464.20 × 664,657.20 - Step 4: Simplify right side
727,642.80x = 725,449,539,072.24 - Step 5: Solve for x
x = 725,449,539,072.24/727,642.80 - Step 6: Final answer
x = 996,985.80
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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.