Finding the Fourth Proportional to 990,689.58, 1,367,788.41 and 681,107.58
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Solution
The fourth proportional to 990,689.58, 1,367,788.41 and 681,107.58 is: 940,366.26
Step by Step Solution
- Step 1: Write the proportion equation
990,689.58 : 1,367,788.41 = 681,107.58 : x - Step 2: Convert to fraction form
990,689.58/1,367,788.41 = 681,107.58/x - Step 3: Cross multiply
990,689.58x = 1,367,788.41 × 681,107.58 - Step 4: Simplify right side
990,689.58x = 931,611,053,887.15 - Step 5: Solve for x
x = 931,611,053,887.15/990,689.58 - Step 6: Final answer
x = 940,366.26
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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.