Finding the Fourth Proportional to 990,821.62, 1,367,326.11 and 538,112.62
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Solution
The fourth proportional to 990,821.62, 1,367,326.11 and 538,112.62 is: 742,591.22
Step by Step Solution
- Step 1: Write the proportion equation
990,821.62 : 1,367,326.11 = 538,112.62 : x - Step 2: Convert to fraction form
990,821.62/1,367,326.11 = 538,112.62/x - Step 3: Cross multiply
990,821.62x = 1,367,326.11 × 538,112.62 - Step 4: Simplify right side
990,821.62x = 735,775,435,446.51 - Step 5: Solve for x
x = 735,775,435,446.51/990,821.62 - Step 6: Final answer
x = 742,591.22
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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.