Finding the Fourth Proportional to 2,118,879.20, 3,178,416.74 and 699,059.36
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Solution
The fourth proportional to 2,118,879.20, 3,178,416.74 and 699,059.36 is: 1,048,621.35
Step by Step Solution
- Step 1: Write the proportion equation
2,118,879.20 : 3,178,416.74 = 699,059.36 : x - Step 2: Convert to fraction form
2,118,879.20/3,178,416.74 = 699,059.36/x - Step 3: Cross multiply
2,118,879.20x = 3,178,416.74 × 699,059.36 - Step 4: Simplify right side
2,118,879.20x = 2,221,901,972,077.69 - Step 5: Solve for x
x = 2,221,901,972,077.69/2,118,879.20 - Step 6: Final answer
x = 1,048,621.35
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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.