Finding the Fourth Proportional to 985,508.21, 1,478,253.57 and 311,589.98
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Solution
The fourth proportional to 985,508.21, 1,478,253.57 and 311,589.98 is: 467,382.20
Step by Step Solution
- Step 1: Write the proportion equation
985,508.21 : 1,478,253.57 = 311,589.98 : x - Step 2: Convert to fraction form
985,508.21/1,478,253.57 = 311,589.98/x - Step 3: Cross multiply
985,508.21x = 1,478,253.57 × 311,589.98 - Step 4: Simplify right side
985,508.21x = 460,608,992,919.96 - Step 5: Solve for x
x = 460,608,992,919.96/985,508.21 - Step 6: Final answer
x = 467,382.20
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.