Finding the Fourth Proportional to 489,636.23, 734,369.70 and 129,809.48
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Solution
The fourth proportional to 489,636.23, 734,369.70 and 129,809.48 is: 194,691.78
Step by Step Solution
- Step 1: Write the proportion equation
489,636.23 : 734,369.70 = 129,809.48 : x - Step 2: Convert to fraction form
489,636.23/734,369.70 = 129,809.48/x - Step 3: Cross multiply
489,636.23x = 734,369.70 × 129,809.48 - Step 4: Simplify right side
489,636.23x = 95,328,148,884.76 - Step 5: Solve for x
x = 95,328,148,884.76/489,636.23 - Step 6: Final answer
x = 194,691.78
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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.