Finding the Fourth Proportional to 2,643,213.78, 3,647,564.16 and 1,555,549.44
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Solution
The fourth proportional to 2,643,213.78, 3,647,564.16 and 1,555,549.44 is: 2,146,616.53
Step by Step Solution
- Step 1: Write the proportion equation
2,643,213.78 : 3,647,564.16 = 1,555,549.44 : x - Step 2: Convert to fraction form
2,643,213.78/3,647,564.16 = 1,555,549.44/x - Step 3: Cross multiply
2,643,213.78x = 3,647,564.16 × 1,555,549.44 - Step 4: Simplify right side
2,643,213.78x = 5,673,966,386,452.07 - Step 5: Solve for x
x = 5,673,966,386,452.07/2,643,213.78 - Step 6: Final answer
x = 2,146,616.53
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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.