Finding the Fourth Proportional to 1,131,022.08, 1,560,770.88 and 621,720.80
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Solution
The fourth proportional to 1,131,022.08, 1,560,770.88 and 621,720.80 is: 857,952.94
Step by Step Solution
- Step 1: Write the proportion equation
1,131,022.08 : 1,560,770.88 = 621,720.80 : x - Step 2: Convert to fraction form
1,131,022.08/1,560,770.88 = 621,720.80/x - Step 3: Cross multiply
1,131,022.08x = 1,560,770.88 × 621,720.80 - Step 4: Simplify right side
1,131,022.08x = 970,363,720,130.30 - Step 5: Solve for x
x = 970,363,720,130.30/1,131,022.08 - Step 6: Final answer
x = 857,952.94
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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.