Finding the Fourth Proportional to 989,163.11, 1,483,716.85 and 315,284.81
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Solution
The fourth proportional to 989,163.11, 1,483,716.85 and 315,284.81 is: 472,918.34
Step by Step Solution
- Step 1: Write the proportion equation
989,163.11 : 1,483,716.85 = 315,284.81 : x - Step 2: Convert to fraction form
989,163.11/1,483,716.85 = 315,284.81/x - Step 3: Cross multiply
989,163.11x = 1,483,716.85 × 315,284.81 - Step 4: Simplify right side
989,163.11x = 467,793,376,939.25 - Step 5: Solve for x
x = 467,793,376,939.25/989,163.11 - Step 6: Final answer
x = 472,918.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.