Finding the Fourth Proportional to 1,977,474.09, 2,728,987.74 and 1,117,983.09
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Solution
The fourth proportional to 1,977,474.09, 2,728,987.74 and 1,117,983.09 is: 1,542,858.22
Step by Step Solution
- Step 1: Write the proportion equation
1,977,474.09 : 2,728,987.74 = 1,117,983.09 : x - Step 2: Convert to fraction form
1,977,474.09/2,728,987.74 = 1,117,983.09/x - Step 3: Cross multiply
1,977,474.09x = 2,728,987.74 × 1,117,983.09 - Step 4: Simplify right side
1,977,474.09x = 3,050,962,146,137.32 - Step 5: Solve for x
x = 3,050,962,146,137.32/1,977,474.09 - Step 6: Final answer
x = 1,542,858.22
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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.