Finding the Fourth Proportional to 1,786,228.92, 2,679,430.92 and 721,138.08
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Solution
The fourth proportional to 1,786,228.92, 2,679,430.92 and 721,138.08 is: 1,081,742.46
Step by Step Solution
- Step 1: Write the proportion equation
1,786,228.92 : 2,679,430.92 = 721,138.08 : x - Step 2: Convert to fraction form
1,786,228.92/2,679,430.92 = 721,138.08/x - Step 3: Cross multiply
1,786,228.92x = 2,679,430.92 × 721,138.08 - Step 4: Simplify right side
1,786,228.92x = 1,932,239,669,141.43 - Step 5: Solve for x
x = 1,932,239,669,141.43/1,786,228.92 - Step 6: Final answer
x = 1,081,742.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.