Finding the Fourth Proportional to 2,157,776.43, 2,977,716.81 and 1,190,906.70
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Solution
The fourth proportional to 2,157,776.43, 2,977,716.81 and 1,190,906.70 is: 1,643,443.15
Step by Step Solution
- Step 1: Write the proportion equation
2,157,776.43 : 2,977,716.81 = 1,190,906.70 : x - Step 2: Convert to fraction form
2,157,776.43/2,977,716.81 = 1,190,906.70/x - Step 3: Cross multiply
2,157,776.43x = 2,977,716.81 × 1,190,906.70 - Step 4: Simplify right side
2,157,776.43x = 3,546,182,899,731.63 - Step 5: Solve for x
x = 3,546,182,899,731.63/2,157,776.43 - Step 6: Final answer
x = 1,643,443.15
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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.