Finding the Fourth Proportional to 2,042,128.14, 2,818,087.47 and 1,278,602.70
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Solution
The fourth proportional to 2,042,128.14, 2,818,087.47 and 1,278,602.70 is: 1,764,440.82
Step by Step Solution
- Step 1: Write the proportion equation
2,042,128.14 : 2,818,087.47 = 1,278,602.70 : x - Step 2: Convert to fraction form
2,042,128.14/2,818,087.47 = 1,278,602.70/x - Step 3: Cross multiply
2,042,128.14x = 2,818,087.47 × 1,278,602.70 - Step 4: Simplify right side
2,042,128.14x = 3,603,214,247,978.17 - Step 5: Solve for x
x = 3,603,214,247,978.17/2,042,128.14 - Step 6: Final answer
x = 1,764,440.82
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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.