Finding the Fourth Proportional to 1,290,226.46, 1,780,442.79 and 717,225.98
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Solution
The fourth proportional to 1,290,226.46, 1,780,442.79 and 717,225.98 is: 989,733.09
Step by Step Solution
- Step 1: Write the proportion equation
1,290,226.46 : 1,780,442.79 = 717,225.98 : x - Step 2: Convert to fraction form
1,290,226.46/1,780,442.79 = 717,225.98/x - Step 3: Cross multiply
1,290,226.46x = 1,780,442.79 × 717,225.98 - Step 4: Simplify right side
1,290,226.46x = 1,276,979,824,891.68 - Step 5: Solve for x
x = 1,276,979,824,891.68/1,290,226.46 - Step 6: Final answer
x = 989,733.09
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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.