Finding the Fourth Proportional to 2,167,378.62, 2,990,982.48 and 1,200,571.53
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Solution
The fourth proportional to 2,167,378.62, 2,990,982.48 and 1,200,571.53 is: 1,656,788.70
Step by Step Solution
- Step 1: Write the proportion equation
2,167,378.62 : 2,990,982.48 = 1,200,571.53 : x - Step 2: Convert to fraction form
2,167,378.62/2,990,982.48 = 1,200,571.53/x - Step 3: Cross multiply
2,167,378.62x = 2,990,982.48 × 1,200,571.53 - Step 4: Simplify right side
2,167,378.62x = 3,590,888,412,216.79 - Step 5: Solve for x
x = 3,590,888,412,216.79/2,167,378.62 - Step 6: Final answer
x = 1,656,788.70
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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.