Finding the Fourth Proportional to 813,519.63, 1,220,286.74 and 214,565.94
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Solution
The fourth proportional to 813,519.63, 1,220,286.74 and 214,565.94 is: 321,850.83
Step by Step Solution
- Step 1: Write the proportion equation
813,519.63 : 1,220,286.74 = 214,565.94 : x - Step 2: Convert to fraction form
813,519.63/1,220,286.74 = 214,565.94/x - Step 3: Cross multiply
813,519.63x = 1,220,286.74 × 214,565.94 - Step 4: Simplify right side
813,519.63x = 261,831,970,364.81 - Step 5: Solve for x
x = 261,831,970,364.81/813,519.63 - Step 6: Final answer
x = 321,850.83
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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.