Finding the Fourth Proportional to 2,528,785.28, 3,489,690.12 and 1,441,121.60
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Solution
The fourth proportional to 2,528,785.28, 3,489,690.12 and 1,441,121.60 is: 1,988,728.68
Step by Step Solution
- Step 1: Write the proportion equation
2,528,785.28 : 3,489,690.12 = 1,441,121.60 : x - Step 2: Convert to fraction form
2,528,785.28/3,489,690.12 = 1,441,121.60/x - Step 3: Cross multiply
2,528,785.28x = 3,489,690.12 × 1,441,121.60 - Step 4: Simplify right side
2,528,785.28x = 5,029,067,809,238.59 - Step 5: Solve for x
x = 5,029,067,809,238.59/2,528,785.28 - Step 6: Final answer
x = 1,988,728.68
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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.