Finding the Fourth Proportional to 521,471,564.20, 782,207,346.30 and 198,313,445.80
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Solution
The fourth proportional to 521,471,564.20, 782,207,346.30 and 198,313,445.80 is: 297,470,168.70
Step by Step Solution
- Step 1: Write the proportion equation
521,471,564.20 : 782,207,346.30 = 198,313,445.80 : x - Step 2: Convert to fraction form
521,471,564.20/782,207,346.30 = 198,313,445.80/x - Step 3: Cross multiply
521,471,564.20x = 782,207,346.30 × 198,313,445.80 - Step 4: Simplify right side
521,471,564.20x = 155,122,234,174,826,880 - Step 5: Solve for x
x = 155,122,234,174,826,880/521,471,564.20 - Step 6: Final answer
x = 297,470,168.70
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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.