Finding the Fourth Proportional to 3,980,955.09, 5,971,436.74 and 989,139.09
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Solution
The fourth proportional to 3,980,955.09, 5,971,436.74 and 989,139.09 is: 1,483,709.66
Step by Step Solution
- Step 1: Write the proportion equation
3,980,955.09 : 5,971,436.74 = 989,139.09 : x - Step 2: Convert to fraction form
3,980,955.09/5,971,436.74 = 989,139.09/x - Step 3: Cross multiply
3,980,955.09x = 5,971,436.74 × 989,139.09 - Step 4: Simplify right side
3,980,955.09x = 5,906,581,526,625.48 - Step 5: Solve for x
x = 5,906,581,526,625.48/3,980,955.09 - Step 6: Final answer
x = 1,483,709.66
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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.