Finding the Fourth Proportional to 1,290,367.28, 1,780,195.38 and 746,402.06
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Solution
The fourth proportional to 1,290,367.28, 1,780,195.38 and 746,402.06 is: 1,029,738.99
Step by Step Solution
- Step 1: Write the proportion equation
1,290,367.28 : 1,780,195.38 = 746,402.06 : x - Step 2: Convert to fraction form
1,290,367.28/1,780,195.38 = 746,402.06/x - Step 3: Cross multiply
1,290,367.28x = 1,780,195.38 × 746,402.06 - Step 4: Simplify right side
1,290,367.28x = 1,328,741,498,834.48 - Step 5: Solve for x
x = 1,328,741,498,834.48/1,290,367.28 - Step 6: Final answer
x = 1,029,738.99
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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.