Finding the Fourth Proportional to 991,585.72, 1,368,387.84 and 538,876.72
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Solution
The fourth proportional to 991,585.72, 1,368,387.84 and 538,876.72 is: 743,649.63
Step by Step Solution
- Step 1: Write the proportion equation
991,585.72 : 1,368,387.84 = 538,876.72 : x - Step 2: Convert to fraction form
991,585.72/1,368,387.84 = 538,876.72/x - Step 3: Cross multiply
991,585.72x = 1,368,387.84 × 538,876.72 - Step 4: Simplify right side
991,585.72x = 737,392,350,907.09 - Step 5: Solve for x
x = 737,392,350,907.09/991,585.72 - Step 6: Final answer
x = 743,649.63
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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.