Finding the Fourth Proportional to 1,152,178.48, 1,589,562.84 and 721,709.20
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Solution
The fourth proportional to 1,152,178.48, 1,589,562.84 and 721,709.20 is: 995,680.92
Step by Step Solution
- Step 1: Write the proportion equation
1,152,178.48 : 1,589,562.84 = 721,709.20 : x - Step 2: Convert to fraction form
1,152,178.48/1,589,562.84 = 721,709.20/x - Step 3: Cross multiply
1,152,178.48x = 1,589,562.84 × 721,709.20 - Step 4: Simplify right side
1,152,178.48x = 1,147,202,125,606.13 - Step 5: Solve for x
x = 1,147,202,125,606.13/1,152,178.48 - Step 6: Final answer
x = 995,680.92
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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.