Finding the Fourth Proportional to 852,984,130.40, 1,279,476,195.60 and 393,819,106.40
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Solution
The fourth proportional to 852,984,130.40, 1,279,476,195.60 and 393,819,106.40 is: 590,728,659.60
Step by Step Solution
- Step 1: Write the proportion equation
852,984,130.40 : 1,279,476,195.60 = 393,819,106.40 : x - Step 2: Convert to fraction form
852,984,130.40/1,279,476,195.60 = 393,819,106.40/x - Step 3: Cross multiply
852,984,130.40x = 1,279,476,195.60 × 393,819,106.40 - Step 4: Simplify right side
852,984,130.40x = 503,882,172,011,263,552 - Step 5: Solve for x
x = 503,882,172,011,263,552/852,984,130.40 - Step 6: Final answer
x = 590,728,659.60
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Double scale
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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.