Finding the Fourth Proportional to 3,991,830.76, 5,987,660.18 and 1,113,120.87
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Solution
The fourth proportional to 3,991,830.76, 5,987,660.18 and 1,113,120.87 is: 1,669,657.33
Step by Step Solution
- Step 1: Write the proportion equation
3,991,830.76 : 5,987,660.18 = 1,113,120.87 : x - Step 2: Convert to fraction form
3,991,830.76/5,987,660.18 = 1,113,120.87/x - Step 3: Cross multiply
3,991,830.76x = 5,987,660.18 × 1,113,120.87 - Step 4: Simplify right side
3,991,830.76x = 6,664,989,478,887.66 - Step 5: Solve for x
x = 6,664,989,478,887.66/3,991,830.76 - Step 6: Final answer
x = 1,669,657.33
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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.