Finding the Fourth Proportional to 752,299.36, 1,128,889.76 and 279,311.20
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Solution
The fourth proportional to 752,299.36, 1,128,889.76 and 279,311.20 is: 419,130.43
Step by Step Solution
- Step 1: Write the proportion equation
752,299.36 : 1,128,889.76 = 279,311.20 : x - Step 2: Convert to fraction form
752,299.36/1,128,889.76 = 279,311.20/x - Step 3: Cross multiply
752,299.36x = 1,128,889.76 × 279,311.20 - Step 4: Simplify right side
752,299.36x = 315,311,553,533.31 - Step 5: Solve for x
x = 315,311,553,533.31/752,299.36 - Step 6: Final answer
x = 419,130.43
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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.