Finding the Fourth Proportional to 784,850,421.20, 1,177,275,631.80 and 768,726,107.60
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Solution
The fourth proportional to 784,850,421.20, 1,177,275,631.80 and 768,726,107.60 is: 1,153,089,161.40
Step by Step Solution
- Step 1: Write the proportion equation
784,850,421.20 : 1,177,275,631.80 = 768,726,107.60 : x - Step 2: Convert to fraction form
784,850,421.20/1,177,275,631.80 = 768,726,107.60/x - Step 3: Cross multiply
784,850,421.20x = 1,177,275,631.80 × 768,726,107.60 - Step 4: Simplify right side
784,850,421.20x = 905,002,514,005,944,832 - Step 5: Solve for x
x = 905,002,514,005,944,832/784,850,421.20 - Step 6: Final answer
x = 1,153,089,161.40
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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.