Finding the Fourth Proportional to 821,462.24, 1,230,923.28 and 641,120.16
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Solution
The fourth proportional to 821,462.24, 1,230,923.28 and 641,120.16 is: 960,688.99
Step by Step Solution
- Step 1: Write the proportion equation
821,462.24 : 1,230,923.28 = 641,120.16 : x - Step 2: Convert to fraction form
821,462.24/1,230,923.28 = 641,120.16/x - Step 3: Cross multiply
821,462.24x = 1,230,923.28 × 641,120.16 - Step 4: Simplify right side
821,462.24x = 789,169,730,221.33 - Step 5: Solve for x
x = 789,169,730,221.33/821,462.24 - Step 6: Final answer
x = 960,688.99
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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.