Finding the Fourth Proportional to 7,121,609.60, 10,682,414.40 and 2,862,435.20
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Solution
The fourth proportional to 7,121,609.60, 10,682,414.40 and 2,862,435.20 is: 4,293,652.80
Step by Step Solution
- Step 1: Write the proportion equation
7,121,609.60 : 10,682,414.40 = 2,862,435.20 : x - Step 2: Convert to fraction form
7,121,609.60/10,682,414.40 = 2,862,435.20/x - Step 3: Cross multiply
7,121,609.60x = 10,682,414.40 × 2,862,435.20 - Step 4: Simplify right side
7,121,609.60x = 30,577,718,999,546.88 - Step 5: Solve for x
x = 30,577,718,999,546.88/7,121,609.60 - Step 6: Final answer
x = 4,293,652.80
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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.