Finding the Fourth Proportional to 1,340,779.40, 2,011,217.70 and 394,245.80
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Solution
The fourth proportional to 1,340,779.40, 2,011,217.70 and 394,245.80 is: 591,382.99
Step by Step Solution
- Step 1: Write the proportion equation
1,340,779.40 : 2,011,217.70 = 394,245.80 : x - Step 2: Convert to fraction form
1,340,779.40/2,011,217.70 = 394,245.80/x - Step 3: Cross multiply
1,340,779.40x = 2,011,217.70 × 394,245.80 - Step 4: Simplify right side
1,340,779.40x = 792,914,131,110.66 - Step 5: Solve for x
x = 792,914,131,110.66/1,340,779.40 - Step 6: Final answer
x = 591,382.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.