Finding the Fourth Proportional to 1,290,936.57, 1,781,555.58 and 717,964.44
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Solution
The fourth proportional to 1,290,936.57, 1,781,555.58 and 717,964.44 is: 990,826.03
Step by Step Solution
- Step 1: Write the proportion equation
1,290,936.57 : 1,781,555.58 = 717,964.44 : x - Step 2: Convert to fraction form
1,290,936.57/1,781,555.58 = 717,964.44/x - Step 3: Cross multiply
1,290,936.57x = 1,781,555.58 × 717,964.44 - Step 4: Simplify right side
1,290,936.57x = 1,279,093,554,323.58 - Step 5: Solve for x
x = 1,279,093,554,323.58/1,290,936.57 - Step 6: Final answer
x = 990,826.03
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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.