Finding the Fourth Proportional to 1,977,419.71, 2,728,814.62 and 1,161,697.75
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Solution
The fourth proportional to 1,977,419.71, 2,728,814.62 and 1,161,697.75 is: 1,603,128.45
Step by Step Solution
- Step 1: Write the proportion equation
1,977,419.71 : 2,728,814.62 = 1,161,697.75 : x - Step 2: Convert to fraction form
1,977,419.71/2,728,814.62 = 1,161,697.75/x - Step 3: Cross multiply
1,977,419.71x = 2,728,814.62 × 1,161,697.75 - Step 4: Simplify right side
1,977,419.71x = 3,170,057,804,221.11 - Step 5: Solve for x
x = 3,170,057,804,221.11/1,977,419.71 - Step 6: Final answer
x = 1,603,128.45
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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.