Finding the Fourth Proportional to 4,752,757.20, 7,129,135.80 and 1,557,112.80
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Solution
The fourth proportional to 4,752,757.20, 7,129,135.80 and 1,557,112.80 is: 2,335,669.20
Step by Step Solution
- Step 1: Write the proportion equation
4,752,757.20 : 7,129,135.80 = 1,557,112.80 : x - Step 2: Convert to fraction form
4,752,757.20/7,129,135.80 = 1,557,112.80/x - Step 3: Cross multiply
4,752,757.20x = 7,129,135.80 × 1,557,112.80 - Step 4: Simplify right side
4,752,757.20x = 11,100,868,607,118.24 - Step 5: Solve for x
x = 11,100,868,607,118.24/4,752,757.20 - Step 6: Final answer
x = 2,335,669.20
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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.