Finding the Fourth Proportional to 2,891,381.22, 3,990,129.54 and 1,602,243.15
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Solution
The fourth proportional to 2,891,381.22, 3,990,129.54 and 1,602,243.15 is: 2,211,108.55
Step by Step Solution
- Step 1: Write the proportion equation
2,891,381.22 : 3,990,129.54 = 1,602,243.15 : x - Step 2: Convert to fraction form
2,891,381.22/3,990,129.54 = 1,602,243.15/x - Step 3: Cross multiply
2,891,381.22x = 3,990,129.54 × 1,602,243.15 - Step 4: Simplify right side
2,891,381.22x = 6,393,157,723,077.65 - Step 5: Solve for x
x = 6,393,157,723,077.65/2,891,381.22 - Step 6: Final answer
x = 2,211,108.55
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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.