Finding the Fourth Proportional to 383,489.37, 530,171.87 and 287,829.99
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Solution
The fourth proportional to 383,489.37, 530,171.87 and 287,829.99 is: 397,923.32
Step by Step Solution
- Step 1: Write the proportion equation
383,489.37 : 530,171.87 = 287,829.99 : x - Step 2: Convert to fraction form
383,489.37/530,171.87 = 287,829.99/x - Step 3: Cross multiply
383,489.37x = 530,171.87 × 287,829.99 - Step 4: Simplify right side
383,489.37x = 152,599,362,601.23 - Step 5: Solve for x
x = 152,599,362,601.23/383,489.37 - Step 6: Final answer
x = 397,923.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.