Finding the Fourth Proportional to 682,729.12, 1,022,721.53 and 340,139.75
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Solution
The fourth proportional to 682,729.12, 1,022,721.53 and 340,139.75 is: 509,526.02
Step by Step Solution
- Step 1: Write the proportion equation
682,729.12 : 1,022,721.53 = 340,139.75 : x - Step 2: Convert to fraction form
682,729.12/1,022,721.53 = 340,139.75/x - Step 3: Cross multiply
682,729.12x = 1,022,721.53 × 340,139.75 - Step 4: Simplify right side
682,729.12x = 347,868,248,619.93 - Step 5: Solve for x
x = 347,868,248,619.93/682,729.12 - Step 6: Final answer
x = 509,526.02
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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.