Finding the Fourth Proportional to 7,676,420.82, 11,511,448.11 and 3,124,380.12
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Solution
The fourth proportional to 7,676,420.82, 11,511,448.11 and 3,124,380.12 is: 4,685,274.62
Step by Step Solution
- Step 1: Write the proportion equation
7,676,420.82 : 11,511,448.11 = 3,124,380.12 : x - Step 2: Convert to fraction form
7,676,420.82/11,511,448.11 = 3,124,380.12/x - Step 3: Cross multiply
7,676,420.82x = 11,511,448.11 × 3,124,380.12 - Step 4: Simplify right side
7,676,420.82x = 35,966,139,627,295.57 - Step 5: Solve for x
x = 35,966,139,627,295.57/7,676,420.82 - Step 6: Final answer
x = 4,685,274.62
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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.