Finding the Fourth Proportional to 1,286,108.14, 1,929,161.19 and 387,549.88
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Solution
The fourth proportional to 1,286,108.14, 1,929,161.19 and 387,549.88 is: 581,324.51
Step by Step Solution
- Step 1: Write the proportion equation
1,286,108.14 : 1,929,161.19 = 387,549.88 : x - Step 2: Convert to fraction form
1,286,108.14/1,929,161.19 = 387,549.88/x - Step 3: Cross multiply
1,286,108.14x = 1,929,161.19 × 387,549.88 - Step 4: Simplify right side
1,286,108.14x = 747,646,187,685.16 - Step 5: Solve for x
x = 747,646,187,685.16/1,286,108.14 - Step 6: Final answer
x = 581,324.51
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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.