Finding the Fourth Proportional to 990,722.07, 1,367,614.94 and 668,868.08
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Solution
The fourth proportional to 990,722.07, 1,367,614.94 and 668,868.08 is: 923,320.47
Step by Step Solution
- Step 1: Write the proportion equation
990,722.07 : 1,367,614.94 = 668,868.08 : x - Step 2: Convert to fraction form
990,722.07/1,367,614.94 = 668,868.08/x - Step 3: Cross multiply
990,722.07x = 1,367,614.94 × 668,868.08 - Step 4: Simplify right side
990,722.07x = 914,753,968,914.70 - Step 5: Solve for x
x = 914,753,968,914.70/990,722.07 - Step 6: Final answer
x = 923,320.47
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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.