Finding the Fourth Proportional to 868,213.66, 1,198,106.87 and 481,013.18
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Solution
The fourth proportional to 868,213.66, 1,198,106.87 and 481,013.18 is: 663,782.69
Step by Step Solution
- Step 1: Write the proportion equation
868,213.66 : 1,198,106.87 = 481,013.18 : x - Step 2: Convert to fraction form
868,213.66/1,198,106.87 = 481,013.18/x - Step 3: Cross multiply
868,213.66x = 1,198,106.87 × 481,013.18 - Step 4: Simplify right side
868,213.66x = 576,305,195,518.55 - Step 5: Solve for x
x = 576,305,195,518.55/868,213.66 - Step 6: Final answer
x = 663,782.69
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1.5x scale
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.