Finding the Fourth Proportional to 990,723.08, 1,367,616.34 and 668,869.08
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Solution
The fourth proportional to 990,723.08, 1,367,616.34 and 668,869.08 is: 923,321.87
Step by Step Solution
- Step 1: Write the proportion equation
990,723.08 : 1,367,616.34 = 668,869.08 : x - Step 2: Convert to fraction form
990,723.08/1,367,616.34 = 668,869.08/x - Step 3: Cross multiply
990,723.08x = 1,367,616.34 × 668,869.08 - Step 4: Simplify right side
990,723.08x = 914,756,283,128.77 - Step 5: Solve for x
x = 914,756,283,128.77/990,723.08 - Step 6: Final answer
x = 923,321.87
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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.