Finding the Fourth Proportional to 1,127,972.75, 1,555,693.76 and 991,717.79
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Solution
The fourth proportional to 1,127,972.75, 1,555,693.76 and 991,717.79 is: 1,367,771.68
Step by Step Solution
- Step 1: Write the proportion equation
1,127,972.75 : 1,555,693.76 = 991,717.79 : x - Step 2: Convert to fraction form
1,127,972.75/1,555,693.76 = 991,717.79/x - Step 3: Cross multiply
1,127,972.75x = 1,555,693.76 × 991,717.79 - Step 4: Simplify right side
1,127,972.75x = 1,542,809,172,284.82 - Step 5: Solve for x
x = 1,542,809,172,284.82/1,127,972.75 - Step 6: Final answer
x = 1,367,771.68
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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.