Finding the Fourth Proportional to 5,112,871.74, 7,055,757.72 and 2,821,032.18
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Solution
The fourth proportional to 5,112,871.74, 7,055,757.72 and 2,821,032.18 is: 3,893,021.49
Step by Step Solution
- Step 1: Write the proportion equation
5,112,871.74 : 7,055,757.72 = 2,821,032.18 : x - Step 2: Convert to fraction form
5,112,871.74/7,055,757.72 = 2,821,032.18/x - Step 3: Cross multiply
5,112,871.74x = 7,055,757.72 × 2,821,032.18 - Step 4: Simplify right side
5,112,871.74x = 19,904,519,582,403.43 - Step 5: Solve for x
x = 19,904,519,582,403.43/5,112,871.74 - Step 6: Final answer
x = 3,893,021.49
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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.