Finding the Fourth Proportional to 990,690.08, 1,367,789.10 and 681,108.08
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Solution
The fourth proportional to 990,690.08, 1,367,789.10 and 681,108.08 is: 940,366.95
Step by Step Solution
- Step 1: Write the proportion equation
990,690.08 : 1,367,789.10 = 681,108.08 : x - Step 2: Convert to fraction form
990,690.08/1,367,789.10 = 681,108.08/x - Step 3: Cross multiply
990,690.08x = 1,367,789.10 × 681,108.08 - Step 4: Simplify right side
990,690.08x = 931,612,207,745.93 - Step 5: Solve for x
x = 931,612,207,745.93/990,690.08 - Step 6: Final answer
x = 940,366.95
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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.