Finding the Fourth Proportional to 1,391,121.36, 1,919,718.60 and 755,217.36
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Solution
The fourth proportional to 1,391,121.36, 1,919,718.60 and 755,217.36 is: 1,042,184.28
Step by Step Solution
- Step 1: Write the proportion equation
1,391,121.36 : 1,919,718.60 = 755,217.36 : x - Step 2: Convert to fraction form
1,391,121.36/1,919,718.60 = 755,217.36/x - Step 3: Cross multiply
1,391,121.36x = 1,919,718.60 × 755,217.36 - Step 4: Simplify right side
1,391,121.36x = 1,449,804,813,034.90 - Step 5: Solve for x
x = 1,449,804,813,034.90/1,391,121.36 - Step 6: Final answer
x = 1,042,184.28
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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.