Finding the Fourth Proportional to 1,777,435.80, 2,666,153.70 and 780,163.80
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Solution
The fourth proportional to 1,777,435.80, 2,666,153.70 and 780,163.80 is: 1,170,245.70
Step by Step Solution
- Step 1: Write the proportion equation
1,777,435.80 : 2,666,153.70 = 780,163.80 : x - Step 2: Convert to fraction form
1,777,435.80/2,666,153.70 = 780,163.80/x - Step 3: Cross multiply
1,777,435.80x = 2,666,153.70 × 780,163.80 - Step 4: Simplify right side
1,777,435.80x = 2,080,036,601,976.06 - Step 5: Solve for x
x = 2,080,036,601,976.06/1,777,435.80 - Step 6: Final answer
x = 1,170,245.70
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1.5x scale
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.