Finding the Fourth Proportional to 1,428,473.88, 1,971,350.81 and 783,917.14
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Solution
The fourth proportional to 1,428,473.88, 1,971,350.81 and 783,917.14 is: 1,081,836.86
Step by Step Solution
- Step 1: Write the proportion equation
1,428,473.88 : 1,971,350.81 = 783,917.14 : x - Step 2: Convert to fraction form
1,428,473.88/1,971,350.81 = 783,917.14/x - Step 3: Cross multiply
1,428,473.88x = 1,971,350.81 × 783,917.14 - Step 4: Simplify right side
1,428,473.88x = 1,545,375,691,109.43 - Step 5: Solve for x
x = 1,545,375,691,109.43/1,428,473.88 - Step 6: Final answer
x = 1,081,836.86
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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.