Finding the Fourth Proportional to 1,212,078.14, 1,672,786.11 and 905,622.74
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Solution
The fourth proportional to 1,212,078.14, 1,672,786.11 and 905,622.74 is: 1,249,847.75
Step by Step Solution
- Step 1: Write the proportion equation
1,212,078.14 : 1,672,786.11 = 905,622.74 : x - Step 2: Convert to fraction form
1,212,078.14/1,672,786.11 = 905,622.74/x - Step 3: Cross multiply
1,212,078.14x = 1,672,786.11 × 905,622.74 - Step 4: Simplify right side
1,212,078.14x = 1,514,913,140,372.14 - Step 5: Solve for x
x = 1,514,913,140,372.14/1,212,078.14 - Step 6: Final answer
x = 1,249,847.75
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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.