Finding the Fourth Proportional to 753,174.72, 1,129,917.60 and 220,713.12
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Solution
The fourth proportional to 753,174.72, 1,129,917.60 and 220,713.12 is: 331,115.25
Step by Step Solution
- Step 1: Write the proportion equation
753,174.72 : 1,129,917.60 = 220,713.12 : x - Step 2: Convert to fraction form
753,174.72/1,129,917.60 = 220,713.12/x - Step 3: Cross multiply
753,174.72x = 1,129,917.60 × 220,713.12 - Step 4: Simplify right side
753,174.72x = 249,387,638,838.91 - Step 5: Solve for x
x = 249,387,638,838.91/753,174.72 - Step 6: Final answer
x = 331,115.25
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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.