Finding the Fourth Proportional to 1,385,480.26, 1,912,281.51 and 812,704.96
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Solution
The fourth proportional to 1,385,480.26, 1,912,281.51 and 812,704.96 is: 1,121,719.82
Step by Step Solution
- Step 1: Write the proportion equation
1,385,480.26 : 1,912,281.51 = 812,704.96 : x - Step 2: Convert to fraction form
1,385,480.26/1,912,281.51 = 812,704.96/x - Step 3: Cross multiply
1,385,480.26x = 1,912,281.51 × 812,704.96 - Step 4: Simplify right side
1,385,480.26x = 1,554,120,668,093.29 - Step 5: Solve for x
x = 1,554,120,668,093.29/1,385,480.26 - Step 6: Final answer
x = 1,121,719.82
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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.