Finding the Fourth Proportional to 3,992,331.40, 5,989,274.70 and 1,717,851.40
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Solution
The fourth proportional to 3,992,331.40, 5,989,274.70 and 1,717,851.40 is: 2,577,111.69
Step by Step Solution
- Step 1: Write the proportion equation
3,992,331.40 : 5,989,274.70 = 1,717,851.40 : x - Step 2: Convert to fraction form
3,992,331.40/5,989,274.70 = 1,717,851.40/x - Step 3: Cross multiply
3,992,331.40x = 5,989,274.70 × 1,717,851.40 - Step 4: Simplify right side
3,992,331.40x = 10,288,683,928,379.58 - Step 5: Solve for x
x = 10,288,683,928,379.58/3,992,331.40 - Step 6: Final answer
x = 2,577,111.69
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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.