Finding the Fourth Proportional to 1,690,708.20, 2,538,314.10 and 981,245.40
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Solution
The fourth proportional to 1,690,708.20, 2,538,314.10 and 981,245.40 is: 1,473,174.99
Step by Step Solution
- Step 1: Write the proportion equation
1,690,708.20 : 2,538,314.10 = 981,245.40 : x - Step 2: Convert to fraction form
1,690,708.20/2,538,314.10 = 981,245.40/x - Step 3: Cross multiply
1,690,708.20x = 2,538,314.10 × 981,245.40 - Step 4: Simplify right side
1,690,708.20x = 2,490,709,034,380.14 - Step 5: Solve for x
x = 2,490,709,034,380.14/1,690,708.20 - Step 6: Final answer
x = 1,473,174.99
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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.