Finding the Fourth Proportional to 1,129,453.05, 1,558,194.47 and 721,449.06
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Solution
The fourth proportional to 1,129,453.05, 1,558,194.47 and 721,449.06 is: 995,311.79
Step by Step Solution
- Step 1: Write the proportion equation
1,129,453.05 : 1,558,194.47 = 721,449.06 : x - Step 2: Convert to fraction form
1,129,453.05/1,558,194.47 = 721,449.06/x - Step 3: Cross multiply
1,129,453.05x = 1,558,194.47 × 721,449.06 - Step 4: Simplify right side
1,129,453.05x = 1,124,157,932,071.45 - Step 5: Solve for x
x = 1,124,157,932,071.45/1,129,453.05 - Step 6: Final answer
x = 995,311.79
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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.