Finding the Fourth Proportional to 521,471,572.20, 782,207,358.30 and 198,313,453.80
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Solution
The fourth proportional to 521,471,572.20, 782,207,358.30 and 198,313,453.80 is: 297,470,180.70
Step by Step Solution
- Step 1: Write the proportion equation
521,471,572.20 : 782,207,358.30 = 198,313,453.80 : x - Step 2: Convert to fraction form
521,471,572.20/782,207,358.30 = 198,313,453.80/x - Step 3: Cross multiply
521,471,572.20x = 782,207,358.30 × 198,313,453.80 - Step 4: Simplify right side
521,471,572.20x = 155,122,242,812,247,104 - Step 5: Solve for x
x = 155,122,242,812,247,104/521,471,572.20 - Step 6: Final answer
x = 297,470,180.70
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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.