Finding the Fourth Proportional to 1,678,623.10, 2,517,643.05 and 613,116.70
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Solution
The fourth proportional to 1,678,623.10, 2,517,643.05 and 613,116.70 is: 919,568.54
Step by Step Solution
- Step 1: Write the proportion equation
1,678,623.10 : 2,517,643.05 = 613,116.70 : x - Step 2: Convert to fraction form
1,678,623.10/2,517,643.05 = 613,116.70/x - Step 3: Cross multiply
1,678,623.10x = 2,517,643.05 × 613,116.70 - Step 4: Simplify right side
1,678,623.10x = 1,543,608,998,593.93 - Step 5: Solve for x
x = 1,543,608,998,593.93/1,678,623.10 - Step 6: Final answer
x = 919,568.54
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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.