Finding the Fourth Proportional to 1,384,238.20, 2,074,121.70 and 783,412.60
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Solution
The fourth proportional to 1,384,238.20, 2,074,121.70 and 783,412.60 is: 1,173,853.66
Step by Step Solution
- Step 1: Write the proportion equation
1,384,238.20 : 2,074,121.70 = 783,412.60 : x - Step 2: Convert to fraction form
1,384,238.20/2,074,121.70 = 783,412.60/x - Step 3: Cross multiply
1,384,238.20x = 2,074,121.70 × 783,412.60 - Step 4: Simplify right side
1,384,238.20x = 1,624,893,073,713.42 - Step 5: Solve for x
x = 1,624,893,073,713.42/1,384,238.20 - Step 6: Final answer
x = 1,173,853.66
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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.