Finding the Fourth Proportional to 3,986,444.74, 5,980,619.66 and 1,290,772.96
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Solution
The fourth proportional to 3,986,444.74, 5,980,619.66 and 1,290,772.96 is: 1,936,467.87
Step by Step Solution
- Step 1: Write the proportion equation
3,986,444.74 : 5,980,619.66 = 1,290,772.96 : x - Step 2: Convert to fraction form
3,986,444.74/5,980,619.66 = 1,290,772.96/x - Step 3: Cross multiply
3,986,444.74x = 5,980,619.66 × 1,290,772.96 - Step 4: Simplify right side
3,986,444.74x = 7,719,622,141,172.39 - Step 5: Solve for x
x = 7,719,622,141,172.39/3,986,444.74 - Step 6: Final answer
x = 1,936,467.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.