Finding the Fourth Proportional to 3,991,993.48, 5,509,003.58 and 2,273,120.80
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Solution
The fourth proportional to 3,991,993.48, 5,509,003.58 and 2,273,120.80 is: 3,136,936.64
Step by Step Solution
- Step 1: Write the proportion equation
3,991,993.48 : 5,509,003.58 = 2,273,120.80 : x - Step 2: Convert to fraction form
3,991,993.48/5,509,003.58 = 2,273,120.80/x - Step 3: Cross multiply
3,991,993.48x = 5,509,003.58 × 2,273,120.80 - Step 4: Simplify right side
3,991,993.48x = 12,522,630,624,972.46 - Step 5: Solve for x
x = 12,522,630,624,972.46/3,991,993.48 - Step 6: Final answer
x = 3,136,936.64
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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.