Finding the Fourth Proportional to 686,565.87, 947,516.74 and 380,738.07
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Solution
The fourth proportional to 686,565.87, 947,516.74 and 380,738.07 is: 525,449.50
Step by Step Solution
- Step 1: Write the proportion equation
686,565.87 : 947,516.74 = 380,738.07 : x - Step 2: Convert to fraction form
686,565.87/947,516.74 = 380,738.07/x - Step 3: Cross multiply
686,565.87x = 947,516.74 × 380,738.07 - Step 4: Simplify right side
686,565.87x = 360,755,694,880.29 - Step 5: Solve for x
x = 360,755,694,880.29/686,565.87 - Step 6: Final answer
x = 525,449.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.