Finding the Fourth Proportional to 1,448,636.40, 2,174,704.20 and 1,438,138.80
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Solution
The fourth proportional to 1,448,636.40, 2,174,704.20 and 1,438,138.80 is: 2,158,945.12
Step by Step Solution
- Step 1: Write the proportion equation
1,448,636.40 : 2,174,704.20 = 1,438,138.80 : x - Step 2: Convert to fraction form
1,448,636.40/2,174,704.20 = 1,438,138.80/x - Step 3: Cross multiply
1,448,636.40x = 2,174,704.20 × 1,438,138.80 - Step 4: Simplify right side
1,448,636.40x = 3,127,526,488,542.96 - Step 5: Solve for x
x = 3,127,526,488,542.96/1,448,636.40 - Step 6: Final answer
x = 2,158,945.12
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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.