Finding the Fourth Proportional to 1,392,714.36, 1,921,801.14 and 819,720.36
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Solution
The fourth proportional to 1,392,714.36, 1,921,801.14 and 819,720.36 is: 1,131,128.94
Step by Step Solution
- Step 1: Write the proportion equation
1,392,714.36 : 1,921,801.14 = 819,720.36 : x - Step 2: Convert to fraction form
1,392,714.36/1,921,801.14 = 819,720.36/x - Step 3: Cross multiply
1,392,714.36x = 1,921,801.14 × 819,720.36 - Step 4: Simplify right side
1,392,714.36x = 1,575,339,522,329.21 - Step 5: Solve for x
x = 1,575,339,522,329.21/1,392,714.36 - Step 6: Final answer
x = 1,131,128.94
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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.