Finding the Fourth Proportional to 3,991,068.63, 5,507,679.87 and 2,272,189.05
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Solution
The fourth proportional to 3,991,068.63, 5,507,679.87 and 2,272,189.05 is: 3,135,623.83
Step by Step Solution
- Step 1: Write the proportion equation
3,991,068.63 : 5,507,679.87 = 2,272,189.05 : x - Step 2: Convert to fraction form
3,991,068.63/5,507,679.87 = 2,272,189.05/x - Step 3: Cross multiply
3,991,068.63x = 5,507,679.87 × 2,272,189.05 - Step 4: Simplify right side
3,991,068.63x = 12,514,489,891,519.42 - Step 5: Solve for x
x = 12,514,489,891,519.42/3,991,068.63 - Step 6: Final answer
x = 3,135,623.83
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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.