Finding the Fourth Proportional to 7,876,786.41, 11,815,181.64 and 2,485,858.75
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Solution
The fourth proportional to 7,876,786.41, 11,815,181.64 and 2,485,858.75 is: 3,728,788.76
Step by Step Solution
- Step 1: Write the proportion equation
7,876,786.41 : 11,815,181.64 = 2,485,858.75 : x - Step 2: Convert to fraction form
7,876,786.41/11,815,181.64 = 2,485,858.75/x - Step 3: Cross multiply
7,876,786.41x = 11,815,181.64 × 2,485,858.75 - Step 4: Simplify right side
7,876,786.41x = 29,370,872,633,095.40 - Step 5: Solve for x
x = 29,370,872,633,095.40/7,876,786.41 - Step 6: Final answer
x = 3,728,788.76
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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.