Finding the Fourth Proportional to 489,969,080.80, 734,953,621.20 and 217,339,847.80
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Solution
The fourth proportional to 489,969,080.80, 734,953,621.20 and 217,339,847.80 is: 326,009,771.70
Step by Step Solution
- Step 1: Write the proportion equation
489,969,080.80 : 734,953,621.20 = 217,339,847.80 : x - Step 2: Convert to fraction form
489,969,080.80/734,953,621.20 = 217,339,847.80/x - Step 3: Cross multiply
489,969,080.80x = 734,953,621.20 × 217,339,847.80 - Step 4: Simplify right side
489,969,080.80x = 159,734,708,171,666,880 - Step 5: Solve for x
x = 159,734,708,171,666,880/489,969,080.80 - Step 6: Final answer
x = 326,009,771.70
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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.