Finding the Fourth Proportional to 768,887.48, 1,153,423.56 and 319,912.18
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Solution
The fourth proportional to 768,887.48, 1,153,423.56 and 319,912.18 is: 479,906.69
Step by Step Solution
- Step 1: Write the proportion equation
768,887.48 : 1,153,423.56 = 319,912.18 : x - Step 2: Convert to fraction form
768,887.48/1,153,423.56 = 319,912.18/x - Step 3: Cross multiply
768,887.48x = 1,153,423.56 × 319,912.18 - Step 4: Simplify right side
768,887.48x = 368,994,245,542.96 - Step 5: Solve for x
x = 368,994,245,542.96/768,887.48 - Step 6: Final answer
x = 479,906.69
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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.