Finding the Fourth Proportional to 1,981,578.96, 2,734,578.78 and 1,122,305.28
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Solution
The fourth proportional to 1,981,578.96, 2,734,578.78 and 1,122,305.28 is: 1,548,781.18
Step by Step Solution
- Step 1: Write the proportion equation
1,981,578.96 : 2,734,578.78 = 1,122,305.28 : x - Step 2: Convert to fraction form
1,981,578.96/2,734,578.78 = 1,122,305.28/x - Step 3: Cross multiply
1,981,578.96x = 2,734,578.78 × 1,122,305.28 - Step 4: Simplify right side
1,981,578.96x = 3,069,032,203,369.96 - Step 5: Solve for x
x = 3,069,032,203,369.96/1,981,578.96 - Step 6: Final answer
x = 1,548,781.18
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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.