Finding the Fourth Proportional to 5,278,851.90, 7,918,277.85 and 4,669,991.10
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Solution
The fourth proportional to 5,278,851.90, 7,918,277.85 and 4,669,991.10 is: 7,004,986.65
Step by Step Solution
- Step 1: Write the proportion equation
5,278,851.90 : 7,918,277.85 = 4,669,991.10 : x - Step 2: Convert to fraction form
5,278,851.90/7,918,277.85 = 4,669,991.10/x - Step 3: Cross multiply
5,278,851.90x = 7,918,277.85 × 4,669,991.10 - Step 4: Simplify right side
5,278,851.90x = 36,978,287,086,827.13 - Step 5: Solve for x
x = 36,978,287,086,827.13/5,278,851.90 - Step 6: Final answer
x = 7,004,986.65
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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.