Finding the Fourth Proportional to 1,386,212.05, 2,079,514.91 and 426,747.51
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Solution
The fourth proportional to 1,386,212.05, 2,079,514.91 and 426,747.51 is: 640,181.86
Step by Step Solution
- Step 1: Write the proportion equation
1,386,212.05 : 2,079,514.91 = 426,747.51 : x - Step 2: Convert to fraction form
1,386,212.05/2,079,514.91 = 426,747.51/x - Step 3: Cross multiply
1,386,212.05x = 2,079,514.91 × 426,747.51 - Step 4: Simplify right side
1,386,212.05x = 887,427,809,850.37 - Step 5: Solve for x
x = 887,427,809,850.37/1,386,212.05 - Step 6: Final answer
x = 640,181.86
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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.