Finding the Fourth Proportional to 1,131,115.08, 1,560,968.60 and 621,830.28
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Solution
The fourth proportional to 1,131,115.08, 1,560,968.60 and 621,830.28 is: 858,142.16
Step by Step Solution
- Step 1: Write the proportion equation
1,131,115.08 : 1,560,968.60 = 621,830.28 : x - Step 2: Convert to fraction form
1,131,115.08/1,560,968.60 = 621,830.28/x - Step 3: Cross multiply
1,131,115.08x = 1,560,968.60 × 621,830.28 - Step 4: Simplify right side
1,131,115.08x = 970,657,541,609.21 - Step 5: Solve for x
x = 970,657,541,609.21/1,131,115.08 - Step 6: Final answer
x = 858,142.16
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1.5x scale
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.