Finding the Fourth Proportional to 520,033.20, 780,122.70 and 204,416.70
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Solution
The fourth proportional to 520,033.20, 780,122.70 and 204,416.70 is: 306,653.71
Step by Step Solution
- Step 1: Write the proportion equation
520,033.20 : 780,122.70 = 204,416.70 : x - Step 2: Convert to fraction form
520,033.20/780,122.70 = 204,416.70/x - Step 3: Cross multiply
520,033.20x = 780,122.70 × 204,416.70 - Step 4: Simplify right side
520,033.20x = 159,470,107,929.09 - Step 5: Solve for x
x = 159,470,107,929.09/520,033.20 - Step 6: Final answer
x = 306,653.71
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1.5x scale
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.