Finding the Fourth Proportional to 821,720.19, 1,230,568.11 and 678,690.39
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Solution
The fourth proportional to 821,720.19, 1,230,568.11 and 678,690.39 is: 1,016,373.65
Step by Step Solution
- Step 1: Write the proportion equation
821,720.19 : 1,230,568.11 = 678,690.39 : x - Step 2: Convert to fraction form
821,720.19/1,230,568.11 = 678,690.39/x - Step 3: Cross multiply
821,720.19x = 1,230,568.11 × 678,690.39 - Step 4: Simplify right side
821,720.19x = 835,174,750,497.46 - Step 5: Solve for x
x = 835,174,750,497.46/821,720.19 - Step 6: Final answer
x = 1,016,373.65
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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.