Finding the Fourth Proportional to 990,638.28, 1,367,081.64 and 560,919.09
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Solution
The fourth proportional to 990,638.28, 1,367,081.64 and 560,919.09 is: 774,068.80
Step by Step Solution
- Step 1: Write the proportion equation
990,638.28 : 1,367,081.64 = 560,919.09 : x - Step 2: Convert to fraction form
990,638.28/1,367,081.64 = 560,919.09/x - Step 3: Cross multiply
990,638.28x = 1,367,081.64 × 560,919.09 - Step 4: Simplify right side
990,638.28x = 766,822,189,464.51 - Step 5: Solve for x
x = 766,822,189,464.51/990,638.28 - Step 6: Final answer
x = 774,068.80
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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.