Finding the Fourth Proportional to 686,211.91, 1,029,310.40 and 281,313.81
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Solution
The fourth proportional to 686,211.91, 1,029,310.40 and 281,313.81 is: 421,967.66
Step by Step Solution
- Step 1: Write the proportion equation
686,211.91 : 1,029,310.40 = 281,313.81 : x - Step 2: Convert to fraction form
686,211.91/1,029,310.40 = 281,313.81/x - Step 3: Cross multiply
686,211.91x = 1,029,310.40 × 281,313.81 - Step 4: Simplify right side
686,211.91x = 289,559,230,999.91 - Step 5: Solve for x
x = 289,559,230,999.91/686,211.91 - Step 6: Final answer
x = 421,967.66
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1.5x scale
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.