Finding the Fourth Proportional to 1,138,905.81, 1,571,731.97 and 622,694.07
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Solution
The fourth proportional to 1,138,905.81, 1,571,731.97 and 622,694.07 is: 859,340.75
Step by Step Solution
- Step 1: Write the proportion equation
1,138,905.81 : 1,571,731.97 = 622,694.07 : x - Step 2: Convert to fraction form
1,138,905.81/1,571,731.97 = 622,694.07/x - Step 3: Cross multiply
1,138,905.81x = 1,571,731.97 × 622,694.07 - Step 4: Simplify right side
1,138,905.81x = 978,708,174,234.95 - Step 5: Solve for x
x = 978,708,174,234.95/1,138,905.81 - Step 6: Final answer
x = 859,340.75
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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.