Finding the Fourth Proportional to 1,292,771.91, 1,939,290.30 and 494,724.68
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Solution
The fourth proportional to 1,292,771.91, 1,939,290.30 and 494,724.68 is: 742,137.69
Step by Step Solution
- Step 1: Write the proportion equation
1,292,771.91 : 1,939,290.30 = 494,724.68 : x - Step 2: Convert to fraction form
1,292,771.91/1,939,290.30 = 494,724.68/x - Step 3: Cross multiply
1,292,771.91x = 1,939,290.30 × 494,724.68 - Step 4: Simplify right side
1,292,771.91x = 959,414,760,924.53 - Step 5: Solve for x
x = 959,414,760,924.53/1,292,771.91 - Step 6: Final answer
x = 742,137.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.