Finding the Fourth Proportional to 451,339.99, 672,974.89 and 438,939.70
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Solution
The fourth proportional to 451,339.99, 672,974.89 and 438,939.70 is: 654,485.32
Step by Step Solution
- Step 1: Write the proportion equation
451,339.99 : 672,974.89 = 438,939.70 : x - Step 2: Convert to fraction form
451,339.99/672,974.89 = 438,939.70/x - Step 3: Cross multiply
451,339.99x = 672,974.89 × 438,939.70 - Step 4: Simplify right side
451,339.99x = 295,395,398,006.57 - Step 5: Solve for x
x = 295,395,398,006.57/451,339.99 - Step 6: Final answer
x = 654,485.32
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.