Finding the Fourth Proportional to 738,673.11, 1,019,449.89 and 428,643.99
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Solution
The fourth proportional to 738,673.11, 1,019,449.89 and 428,643.99 is: 591,575.71
Step by Step Solution
- Step 1: Write the proportion equation
738,673.11 : 1,019,449.89 = 428,643.99 : x - Step 2: Convert to fraction form
738,673.11/1,019,449.89 = 428,643.99/x - Step 3: Cross multiply
738,673.11x = 1,019,449.89 × 428,643.99 - Step 4: Simplify right side
738,673.11x = 436,981,068,454.66 - Step 5: Solve for x
x = 436,981,068,454.66/738,673.11 - Step 6: Final answer
x = 591,575.71
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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.