Finding the Fourth Proportional to 556,678,704.62, 768,171,811.86 and 321,744,581.75
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Solution
The fourth proportional to 556,678,704.62, 768,171,811.86 and 321,744,581.75 is: 443,981,629.38
Step by Step Solution
- Step 1: Write the proportion equation
556,678,704.62 : 768,171,811.86 = 321,744,581.75 : x - Step 2: Convert to fraction form
556,678,704.62/768,171,811.86 = 321,744,581.75/x - Step 3: Cross multiply
556,678,704.62x = 768,171,811.86 × 321,744,581.75 - Step 4: Simplify right side
556,678,704.62x = 247,155,118,315,194,528 - Step 5: Solve for x
x = 247,155,118,315,194,528/556,678,704.62 - Step 6: Final answer
x = 443,981,629.38
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.