Finding the Fourth Proportional to 3,855,655.68, 5,321,112 and 2,136,940.80
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Solution
The fourth proportional to 3,855,655.68, 5,321,112 and 2,136,940.80 is: 2,949,148.54
Step by Step Solution
- Step 1: Write the proportion equation
3,855,655.68 : 5,321,112 = 2,136,940.80 : x - Step 2: Convert to fraction form
3,855,655.68/5,321,112 = 2,136,940.80/x - Step 3: Cross multiply
3,855,655.68x = 5,321,112 × 2,136,940.80 - Step 4: Simplify right side
3,855,655.68x = 11,370,901,334,169.60 - Step 5: Solve for x
x = 11,370,901,334,169.60/3,855,655.68 - Step 6: Final answer
x = 2,949,148.54
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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.