Finding the Fourth Proportional to 3,922,289.63, 5,411,203.21 and 2,268,131.09
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Solution
The fourth proportional to 3,922,289.63, 5,411,203.21 and 2,268,131.09 is: 3,129,120.84
Step by Step Solution
- Step 1: Write the proportion equation
3,922,289.63 : 5,411,203.21 = 2,268,131.09 : x - Step 2: Convert to fraction form
3,922,289.63/5,411,203.21 = 2,268,131.09/x - Step 3: Cross multiply
3,922,289.63x = 5,411,203.21 × 2,268,131.09 - Step 4: Simplify right side
3,922,289.63x = 12,273,318,234,908.80 - Step 5: Solve for x
x = 12,273,318,234,908.80/3,922,289.63 - Step 6: Final answer
x = 3,129,120.84
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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.