Finding the Fourth Proportional to 1,121,857.98, 1,548,157.88 and 612,556.70
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Solution
The fourth proportional to 1,121,857.98, 1,548,157.88 and 612,556.70 is: 845,324.90
Step by Step Solution
- Step 1: Write the proportion equation
1,121,857.98 : 1,548,157.88 = 612,556.70 : x - Step 2: Convert to fraction form
1,121,857.98/1,548,157.88 = 612,556.70/x - Step 3: Cross multiply
1,121,857.98x = 1,548,157.88 × 612,556.70 - Step 4: Simplify right side
1,121,857.98x = 948,334,482,051.80 - Step 5: Solve for x
x = 948,334,482,051.80/1,121,857.98 - Step 6: Final answer
x = 845,324.90
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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.