Finding the Fourth Proportional to 1,912,790.19, 2,639,650.77 and 1,053,348.40
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Solution
The fourth proportional to 1,912,790.19, 2,639,650.77 and 1,053,348.40 is: 1,453,620.95
Step by Step Solution
- Step 1: Write the proportion equation
1,912,790.19 : 2,639,650.77 = 1,053,348.40 : x - Step 2: Convert to fraction form
1,912,790.19/2,639,650.77 = 1,053,348.40/x - Step 3: Cross multiply
1,912,790.19x = 2,639,650.77 × 1,053,348.40 - Step 4: Simplify right side
1,912,790.19x = 2,780,471,896,673.27 - Step 5: Solve for x
x = 2,780,471,896,673.27/1,912,790.19 - Step 6: Final answer
x = 1,453,620.95
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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.