Finding the Fourth Proportional to 1,121,163.48, 1,680,744.96 and 411,025.68
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Solution
The fourth proportional to 1,121,163.48, 1,680,744.96 and 411,025.68 is: 616,171.82
Step by Step Solution
- Step 1: Write the proportion equation
1,121,163.48 : 1,680,744.96 = 411,025.68 : x - Step 2: Convert to fraction form
1,121,163.48/1,680,744.96 = 411,025.68/x - Step 3: Cross multiply
1,121,163.48x = 1,680,744.96 × 411,025.68 - Step 4: Simplify right side
1,121,163.48x = 690,829,340,090.57 - Step 5: Solve for x
x = 690,829,340,090.57/1,121,163.48 - Step 6: Final answer
x = 616,171.82
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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.