Finding the Fourth Proportional to 3,988,990.68, 5,541,970.25 and 3,941,160.99
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Solution
The fourth proportional to 3,988,990.68, 5,541,970.25 and 3,941,160.99 is: 5,475,519.67
Step by Step Solution
- Step 1: Write the proportion equation
3,988,990.68 : 5,541,970.25 = 3,941,160.99 : x - Step 2: Convert to fraction form
3,988,990.68/5,541,970.25 = 3,941,160.99/x - Step 3: Cross multiply
3,988,990.68x = 5,541,970.25 × 3,941,160.99 - Step 4: Simplify right side
3,988,990.68x = 21,841,796,937,334.75 - Step 5: Solve for x
x = 21,841,796,937,334.75/3,988,990.68 - Step 6: Final answer
x = 5,475,519.67
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.