Finding the Fourth Proportional to 1,112,397.12, 1,669,091.76 and 513,036
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Solution
The fourth proportional to 1,112,397.12, 1,669,091.76 and 513,036 is: 769,782.79
Step by Step Solution
- Step 1: Write the proportion equation
1,112,397.12 : 1,669,091.76 = 513,036 : x - Step 2: Convert to fraction form
1,112,397.12/1,669,091.76 = 513,036/x - Step 3: Cross multiply
1,112,397.12x = 1,669,091.76 × 513,036 - Step 4: Simplify right side
1,112,397.12x = 856,304,160,183.36 - Step 5: Solve for x
x = 856,304,160,183.36/1,112,397.12 - Step 6: Final answer
x = 769,782.79
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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.