Finding the Fourth Proportional to 1,387,471.26, 2,081,177.73 and 639,517.26
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Solution
The fourth proportional to 1,387,471.26, 2,081,177.73 and 639,517.26 is: 959,262.45
Step by Step Solution
- Step 1: Write the proportion equation
1,387,471.26 : 2,081,177.73 = 639,517.26 : x - Step 2: Convert to fraction form
1,387,471.26/2,081,177.73 = 639,517.26/x - Step 3: Cross multiply
1,387,471.26x = 2,081,177.73 × 639,517.26 - Step 4: Simplify right side
1,387,471.26x = 1,330,949,079,462.62 - Step 5: Solve for x
x = 1,330,949,079,462.62/1,387,471.26 - Step 6: Final answer
x = 959,262.45
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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.