Finding the Fourth Proportional to 1,263,120, 1,743,883.20 and 811,207.68
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Solution
The fourth proportional to 1,263,120, 1,743,883.20 and 811,207.68 is: 1,119,965.99
Step by Step Solution
- Step 1: Write the proportion equation
1,263,120 : 1,743,883.20 = 811,207.68 : x - Step 2: Convert to fraction form
1,263,120/1,743,883.20 = 811,207.68/x - Step 3: Cross multiply
1,263,120x = 1,743,883.20 × 811,207.68 - Step 4: Simplify right side
1,263,120x = 1,414,651,444,862.98 - Step 5: Solve for x
x = 1,414,651,444,862.98/1,263,120 - Step 6: Final answer
x = 1,119,965.99
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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.