Finding the Fourth Proportional to 1,278,878.94, 1,764,853.11 and 705,919.23
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Solution
The fourth proportional to 1,278,878.94, 1,764,853.11 and 705,919.23 is: 974,168.63
Step by Step Solution
- Step 1: Write the proportion equation
1,278,878.94 : 1,764,853.11 = 705,919.23 : x - Step 2: Convert to fraction form
1,278,878.94/1,764,853.11 = 705,919.23/x - Step 3: Cross multiply
1,278,878.94x = 1,764,853.11 × 705,919.23 - Step 4: Simplify right side
1,278,878.94x = 1,245,843,748,474.31 - Step 5: Solve for x
x = 1,245,843,748,474.31/1,278,878.94 - Step 6: Final answer
x = 974,168.63
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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.