Finding the Fourth Proportional to 2,021,400.74, 2,790,791.94 and 1,286,769.52
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Solution
The fourth proportional to 2,021,400.74, 2,790,791.94 and 1,286,769.52 is: 1,776,543.33
Step by Step Solution
- Step 1: Write the proportion equation
2,021,400.74 : 2,790,791.94 = 1,286,769.52 : x - Step 2: Convert to fraction form
2,021,400.74/2,790,791.94 = 1,286,769.52/x - Step 3: Cross multiply
2,021,400.74x = 2,790,791.94 × 1,286,769.52 - Step 4: Simplify right side
2,021,400.74x = 3,591,106,005,053.67 - Step 5: Solve for x
x = 3,591,106,005,053.67/2,021,400.74 - Step 6: Final answer
x = 1,776,543.33
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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.