Finding the Fourth Proportional to 1,079,579.92, 1,619,371.81 and 280,860.19
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Solution
The fourth proportional to 1,079,579.92, 1,619,371.81 and 280,860.19 is: 421,290.79
Step by Step Solution
- Step 1: Write the proportion equation
1,079,579.92 : 1,619,371.81 = 280,860.19 : x - Step 2: Convert to fraction form
1,079,579.92/1,619,371.81 = 280,860.19/x - Step 3: Cross multiply
1,079,579.92x = 1,619,371.81 × 280,860.19 - Step 4: Simplify right side
1,079,579.92x = 454,817,074,237.24 - Step 5: Solve for x
x = 454,817,074,237.24/1,079,579.92 - Step 6: Final answer
x = 421,290.79
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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.