Finding the Fourth Proportional to 521,471,563.20, 782,207,344.80 and 198,313,444.80
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Solution
The fourth proportional to 521,471,563.20, 782,207,344.80 and 198,313,444.80 is: 297,470,167.20
Step by Step Solution
- Step 1: Write the proportion equation
521,471,563.20 : 782,207,344.80 = 198,313,444.80 : x - Step 2: Convert to fraction form
521,471,563.20/782,207,344.80 = 198,313,444.80/x - Step 3: Cross multiply
521,471,563.20x = 782,207,344.80 × 198,313,444.80 - Step 4: Simplify right side
521,471,563.20x = 155,122,233,095,149,376 - Step 5: Solve for x
x = 155,122,233,095,149,376/521,471,563.20 - Step 6: Final answer
x = 297,470,167.20
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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.