Finding the Fourth Proportional to 629,857,432.20, 944,786,148.30 and 220,860,438.60
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Solution
The fourth proportional to 629,857,432.20, 944,786,148.30 and 220,860,438.60 is: 331,290,657.90
Step by Step Solution
- Step 1: Write the proportion equation
629,857,432.20 : 944,786,148.30 = 220,860,438.60 : x - Step 2: Convert to fraction form
629,857,432.20/944,786,148.30 = 220,860,438.60/x - Step 3: Cross multiply
629,857,432.20x = 944,786,148.30 × 220,860,438.60 - Step 4: Simplify right side
629,857,432.20x = 208,665,883,096,742,624 - Step 5: Solve for x
x = 208,665,883,096,742,624/629,857,432.20 - Step 6: Final answer
x = 331,290,657.90
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Similar ratio
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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.