Finding the Fourth Proportional to 4,089,935.92, 5,642,037.35 and 3,121,384.70
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Solution
The fourth proportional to 4,089,935.92, 5,642,037.35 and 3,121,384.70 is: 4,305,927.87
Step by Step Solution
- Step 1: Write the proportion equation
4,089,935.92 : 5,642,037.35 = 3,121,384.70 : x - Step 2: Convert to fraction form
4,089,935.92/5,642,037.35 = 3,121,384.70/x - Step 3: Cross multiply
4,089,935.92x = 5,642,037.35 × 3,121,384.70 - Step 4: Simplify right side
4,089,935.92x = 17,610,969,040,711.82 - Step 5: Solve for x
x = 17,610,969,040,711.82/4,089,935.92 - Step 6: Final answer
x = 4,305,927.87
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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.