Finding the Fourth Proportional to 991,674.09, 1,368,510.39 and 538,965.09
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Solution
The fourth proportional to 991,674.09, 1,368,510.39 and 538,965.09 is: 743,771.90
Step by Step Solution
- Step 1: Write the proportion equation
991,674.09 : 1,368,510.39 = 538,965.09 : x - Step 2: Convert to fraction form
991,674.09/1,368,510.39 = 538,965.09/x - Step 3: Cross multiply
991,674.09x = 1,368,510.39 × 538,965.09 - Step 4: Simplify right side
991,674.09x = 737,579,325,512.29 - Step 5: Solve for x
x = 737,579,325,512.29/991,674.09 - Step 6: Final answer
x = 743,771.90
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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.