Finding the Fourth Proportional to 8,642,978.82, 11,927,286.29 and 4,775,472.44
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Solution
The fourth proportional to 8,642,978.82, 11,927,286.29 and 4,775,472.44 is: 6,590,138.43
Step by Step Solution
- Step 1: Write the proportion equation
8,642,978.82 : 11,927,286.29 = 4,775,472.44 : x - Step 2: Convert to fraction form
8,642,978.82/11,927,286.29 = 4,775,472.44/x - Step 3: Cross multiply
8,642,978.82x = 11,927,286.29 × 4,775,472.44 - Step 4: Simplify right side
8,642,978.82x = 56,958,426,878,371.05 - Step 5: Solve for x
x = 56,958,426,878,371.05/8,642,978.82 - Step 6: Final answer
x = 6,590,138.43
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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.