Finding the Fourth Proportional to 991,432.31, 1,368,184.79 and 538,723.31
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Solution
The fourth proportional to 991,432.31, 1,368,184.79 and 538,723.31 is: 743,442.63
Step by Step Solution
- Step 1: Write the proportion equation
991,432.31 : 1,368,184.79 = 538,723.31 : x - Step 2: Convert to fraction form
991,432.31/1,368,184.79 = 538,723.31/x - Step 3: Cross multiply
991,432.31x = 1,368,184.79 × 538,723.31 - Step 4: Simplify right side
991,432.31x = 737,073,043,527.73 - Step 5: Solve for x
x = 737,073,043,527.73/991,432.31 - Step 6: Final answer
x = 743,442.63
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.