Finding the Fourth Proportional to 813,121.69, 1,219,571.80 and 214,032.68
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Solution
The fourth proportional to 813,121.69, 1,219,571.80 and 214,032.68 is: 321,019.87
Step by Step Solution
- Step 1: Write the proportion equation
813,121.69 : 1,219,571.80 = 214,032.68 : x - Step 2: Convert to fraction form
813,121.69/1,219,571.80 = 214,032.68/x - Step 3: Cross multiply
813,121.69x = 1,219,571.80 × 214,032.68 - Step 4: Simplify right side
813,121.69x = 261,028,220,806.42 - Step 5: Solve for x
x = 261,028,220,806.42/813,121.69 - Step 6: Final answer
x = 321,019.87
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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.