Finding the Fourth Proportional to 7,178,361.82, 10,761,490.20 and 3,131,881.68
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Solution
The fourth proportional to 7,178,361.82, 10,761,490.20 and 3,131,881.68 is: 4,695,181.83
Step by Step Solution
- Step 1: Write the proportion equation
7,178,361.82 : 10,761,490.20 = 3,131,881.68 : x - Step 2: Convert to fraction form
7,178,361.82/10,761,490.20 = 3,131,881.68/x - Step 3: Cross multiply
7,178,361.82x = 10,761,490.20 × 3,131,881.68 - Step 4: Simplify right side
7,178,361.82x = 33,703,713,953,072.08 - Step 5: Solve for x
x = 33,703,713,953,072.08/7,178,361.82 - Step 6: Final answer
x = 4,695,181.83
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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.