Finding the Fourth Proportional to 1,278,682.76, 1,764,578.60 and 705,718.83
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Solution
The fourth proportional to 1,278,682.76, 1,764,578.60 and 705,718.83 is: 973,889.99
Step by Step Solution
- Step 1: Write the proportion equation
1,278,682.76 : 1,764,578.60 = 705,718.83 : x - Step 2: Convert to fraction form
1,278,682.76/1,764,578.60 = 705,718.83/x - Step 3: Cross multiply
1,278,682.76x = 1,764,578.60 × 705,718.83 - Step 4: Simplify right side
1,278,682.76x = 1,245,296,338,859.47 - Step 5: Solve for x
x = 1,245,296,338,859.47/1,278,682.76 - Step 6: Final answer
x = 973,889.99
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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.