Finding the Fourth Proportional to 1,129,722.96, 1,558,441.20 and 721,395.48
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Solution
The fourth proportional to 1,129,722.96, 1,558,441.20 and 721,395.48 is: 995,157.64
Step by Step Solution
- Step 1: Write the proportion equation
1,129,722.96 : 1,558,441.20 = 721,395.48 : x - Step 2: Convert to fraction form
1,129,722.96/1,558,441.20 = 721,395.48/x - Step 3: Cross multiply
1,129,722.96x = 1,558,441.20 × 721,395.48 - Step 4: Simplify right side
1,129,722.96x = 1,124,252,437,525.78 - Step 5: Solve for x
x = 1,124,252,437,525.78/1,129,722.96 - Step 6: Final answer
x = 995,157.64
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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.