Finding the Fourth Proportional to 2,157,775.93, 2,977,716.12 and 1,190,906.20
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Solution
The fourth proportional to 2,157,775.93, 2,977,716.12 and 1,190,906.20 is: 1,643,442.46
Step by Step Solution
- Step 1: Write the proportion equation
2,157,775.93 : 2,977,716.12 = 1,190,906.20 : x - Step 2: Convert to fraction form
2,157,775.93/2,977,716.12 = 1,190,906.20/x - Step 3: Cross multiply
2,157,775.93x = 2,977,716.12 × 1,190,906.20 - Step 4: Simplify right side
2,157,775.93x = 3,546,180,589,147.94 - Step 5: Solve for x
x = 3,546,180,589,147.94/2,157,775.93 - Step 6: Final answer
x = 1,643,442.46
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1.5x scale
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.