Finding the Fourth Proportional to 738,145,476.40, 1,107,218,214.60 and 431,279,633.20
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Solution
The fourth proportional to 738,145,476.40, 1,107,218,214.60 and 431,279,633.20 is: 646,919,449.80
Step by Step Solution
- Step 1: Write the proportion equation
738,145,476.40 : 1,107,218,214.60 = 431,279,633.20 : x - Step 2: Convert to fraction form
738,145,476.40/1,107,218,214.60 = 431,279,633.20/x - Step 3: Cross multiply
738,145,476.40x = 1,107,218,214.60 × 431,279,633.20 - Step 4: Simplify right side
738,145,476.40x = 477,520,665,465,046,848 - Step 5: Solve for x
x = 477,520,665,465,046,848/738,145,476.40 - Step 6: Final answer
x = 646,919,449.80
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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.