Finding the Fourth Proportional to 919,990.72, 1,379,549.04 and 320,879.08
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Solution
The fourth proportional to 919,990.72, 1,379,549.04 and 320,879.08 is: 481,166.19
Step by Step Solution
- Step 1: Write the proportion equation
919,990.72 : 1,379,549.04 = 320,879.08 : x - Step 2: Convert to fraction form
919,990.72/1,379,549.04 = 320,879.08/x - Step 3: Cross multiply
919,990.72x = 1,379,549.04 × 320,879.08 - Step 4: Simplify right side
919,990.72x = 442,668,426,770.08 - Step 5: Solve for x
x = 442,668,426,770.08/919,990.72 - Step 6: Final answer
x = 481,166.19
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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.