Finding the Fourth Proportional to 1,428,734.40, 2,143,183.68 and 518,115.12
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Solution
The fourth proportional to 1,428,734.40, 2,143,183.68 and 518,115.12 is: 777,202.45
Step by Step Solution
- Step 1: Write the proportion equation
1,428,734.40 : 2,143,183.68 = 518,115.12 : x - Step 2: Convert to fraction form
1,428,734.40/2,143,183.68 = 518,115.12/x - Step 3: Cross multiply
1,428,734.40x = 2,143,183.68 × 518,115.12 - Step 4: Simplify right side
1,428,734.40x = 1,110,415,869,545.24 - Step 5: Solve for x
x = 1,110,415,869,545.24/1,428,734.40 - Step 6: Final answer
x = 777,202.45
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1.5x scale
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.