Finding the Fourth Proportional to 1,428,170.40, 1,970,874.99 and 816,336.24
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Solution
The fourth proportional to 1,428,170.40, 1,970,874.99 and 816,336.24 is: 1,126,543.92
Step by Step Solution
- Step 1: Write the proportion equation
1,428,170.40 : 1,970,874.99 = 816,336.24 : x - Step 2: Convert to fraction form
1,428,170.40/1,970,874.99 = 816,336.24/x - Step 3: Cross multiply
1,428,170.40x = 1,970,874.99 × 816,336.24 - Step 4: Simplify right side
1,428,170.40x = 1,608,896,678,846.64 - Step 5: Solve for x
x = 1,608,896,678,846.64/1,428,170.40 - Step 6: Final answer
x = 1,126,543.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.