Finding the Fourth Proportional to 478,521,806.20, 717,782,709.30 and 306,193,204.60
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Solution
The fourth proportional to 478,521,806.20, 717,782,709.30 and 306,193,204.60 is: 459,289,806.90
Step by Step Solution
- Step 1: Write the proportion equation
478,521,806.20 : 717,782,709.30 = 306,193,204.60 : x - Step 2: Convert to fraction form
478,521,806.20/717,782,709.30 = 306,193,204.60/x - Step 3: Cross multiply
478,521,806.20x = 717,782,709.30 × 306,193,204.60 - Step 4: Simplify right side
478,521,806.20x = 219,780,187,967,037,216 - Step 5: Solve for x
x = 219,780,187,967,037,216/478,521,806.20 - Step 6: Final answer
x = 459,289,806.90
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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.