Finding the Fourth Proportional to 2,128,704.51, 3,193,478.07 and 780,878.90
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Solution
The fourth proportional to 2,128,704.51, 3,193,478.07 and 780,878.90 is: 1,171,472.89
Step by Step Solution
- Step 1: Write the proportion equation
2,128,704.51 : 3,193,478.07 = 780,878.90 : x - Step 2: Convert to fraction form
2,128,704.51/3,193,478.07 = 780,878.90/x - Step 3: Cross multiply
2,128,704.51x = 3,193,478.07 × 780,878.90 - Step 4: Simplify right side
2,128,704.51x = 2,493,719,626,508.33 - Step 5: Solve for x
x = 2,493,719,626,508.33/2,128,704.51 - Step 6: Final answer
x = 1,171,472.89
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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.