Finding the Fourth Proportional to 790,768,816.26, 1,186,140,020.99 and 192,512,977.31
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Solution
The fourth proportional to 790,768,816.26, 1,186,140,020.99 and 192,512,977.31 is: 288,766,251.58
Step by Step Solution
- Step 1: Write the proportion equation
790,768,816.26 : 1,186,140,020.99 = 192,512,977.31 : x - Step 2: Convert to fraction form
790,768,816.26/1,186,140,020.99 = 192,512,977.31/x - Step 3: Cross multiply
790,768,816.26x = 1,186,140,020.99 × 192,512,977.31 - Step 4: Simplify right side
790,768,816.26x = 228,347,346,940,437,504 - Step 5: Solve for x
x = 228,347,346,940,437,504/790,768,816.26 - Step 6: Final answer
x = 288,766,251.58
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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.