Finding the Fourth Proportional to 783,367.74, 1,081,239.80 and 477,612.72
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Solution
The fourth proportional to 783,367.74, 1,081,239.80 and 477,612.72 is: 659,222.81
Step by Step Solution
- Step 1: Write the proportion equation
783,367.74 : 1,081,239.80 = 477,612.72 : x - Step 2: Convert to fraction form
783,367.74/1,081,239.80 = 477,612.72/x - Step 3: Cross multiply
783,367.74x = 1,081,239.80 × 477,612.72 - Step 4: Simplify right side
783,367.74x = 516,413,882,078.74 - Step 5: Solve for x
x = 516,413,882,078.74/783,367.74 - Step 6: Final answer
x = 659,222.81
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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.