Finding the Fourth Proportional to 1,398,121.44, 1,929,477.36 and 786,466.76
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Solution
The fourth proportional to 1,398,121.44, 1,929,477.36 and 786,466.76 is: 1,085,363.37
Step by Step Solution
- Step 1: Write the proportion equation
1,398,121.44 : 1,929,477.36 = 786,466.76 : x - Step 2: Convert to fraction form
1,398,121.44/1,929,477.36 = 786,466.76/x - Step 3: Cross multiply
1,398,121.44x = 1,929,477.36 × 786,466.76 - Step 4: Simplify right side
1,398,121.44x = 1,517,469,798,165.17 - Step 5: Solve for x
x = 1,517,469,798,165.17/1,398,121.44 - Step 6: Final answer
x = 1,085,363.37
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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.