Finding the Fourth Proportional to 1,212,213.40, 1,818,147.30 and 413,531.80
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Solution
The fourth proportional to 1,212,213.40, 1,818,147.30 and 413,531.80 is: 620,238.75
Step by Step Solution
- Step 1: Write the proportion equation
1,212,213.40 : 1,818,147.30 = 413,531.80 : x - Step 2: Convert to fraction form
1,212,213.40/1,818,147.30 = 413,531.80/x - Step 3: Cross multiply
1,212,213.40x = 1,818,147.30 × 413,531.80 - Step 4: Simplify right side
1,212,213.40x = 751,861,725,634.14 - Step 5: Solve for x
x = 751,861,725,634.14/1,212,213.40 - Step 6: Final answer
x = 620,238.75
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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.