Finding the Fourth Proportional to 4,157,643.62, 6,236,480.75 and 1,278,990.49
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Solution
The fourth proportional to 4,157,643.62, 6,236,480.75 and 1,278,990.49 is: 1,918,490.45
Step by Step Solution
- Step 1: Write the proportion equation
4,157,643.62 : 6,236,480.75 = 1,278,990.49 : x - Step 2: Convert to fraction form
4,157,643.62/6,236,480.75 = 1,278,990.49/x - Step 3: Cross multiply
4,157,643.62x = 6,236,480.75 × 1,278,990.49 - Step 4: Simplify right side
4,157,643.62x = 7,976,399,570,318.07 - Step 5: Solve for x
x = 7,976,399,570,318.07/4,157,643.62 - Step 6: Final answer
x = 1,918,490.45
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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.