Finding the Fourth Proportional to 991,425.98, 1,368,176.51 and 538,716.98
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Solution
The fourth proportional to 991,425.98, 1,368,176.51 and 538,716.98 is: 743,434.14
Step by Step Solution
- Step 1: Write the proportion equation
991,425.98 : 1,368,176.51 = 538,716.98 : x - Step 2: Convert to fraction form
991,425.98/1,368,176.51 = 538,716.98/x - Step 3: Cross multiply
991,425.98x = 1,368,176.51 × 538,716.98 - Step 4: Simplify right side
991,425.98x = 737,059,917,574.14 - Step 5: Solve for x
x = 737,059,917,574.14/991,425.98 - Step 6: Final answer
x = 743,434.14
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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.