Finding the Fourth Proportional to 991,424.98, 1,368,175.13 and 538,715.98
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Solution
The fourth proportional to 991,424.98, 1,368,175.13 and 538,715.98 is: 743,432.76
Step by Step Solution
- Step 1: Write the proportion equation
991,424.98 : 1,368,175.13 = 538,715.98 : x - Step 2: Convert to fraction form
991,424.98/1,368,175.13 = 538,715.98/x - Step 3: Cross multiply
991,424.98x = 1,368,175.13 × 538,715.98 - Step 4: Simplify right side
991,424.98x = 737,057,805,969.58 - Step 5: Solve for x
x = 737,057,805,969.58/991,424.98 - Step 6: Final answer
x = 743,432.76
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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.