Finding the Fourth Proportional to 1,543,514.70, 2,315,272.05 and 421,583.70
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Solution
The fourth proportional to 1,543,514.70, 2,315,272.05 and 421,583.70 is: 632,375.55
Step by Step Solution
- Step 1: Write the proportion equation
1,543,514.70 : 2,315,272.05 = 421,583.70 : x - Step 2: Convert to fraction form
1,543,514.70/2,315,272.05 = 421,583.70/x - Step 3: Cross multiply
1,543,514.70x = 2,315,272.05 × 421,583.70 - Step 4: Simplify right side
1,543,514.70x = 976,080,957,345.59 - Step 5: Solve for x
x = 976,080,957,345.59/1,543,514.70 - Step 6: Final answer
x = 632,375.55
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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.