Finding the Fourth Proportional to 489,116.40, 733,674.60 and 445,813.80
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Solution
The fourth proportional to 489,116.40, 733,674.60 and 445,813.80 is: 668,720.70
Step by Step Solution
- Step 1: Write the proportion equation
489,116.40 : 733,674.60 = 445,813.80 : x - Step 2: Convert to fraction form
489,116.40/733,674.60 = 445,813.80/x - Step 3: Cross multiply
489,116.40x = 733,674.60 × 445,813.80 - Step 4: Simplify right side
489,116.40x = 327,082,261,389.48 - Step 5: Solve for x
x = 327,082,261,389.48/489,116.40 - Step 6: Final answer
x = 668,720.70
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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.