Finding the Fourth Proportional to 7,080,189,708.96, 9,771,202,620.72 and 3,908,984,421.60
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Solution
The fourth proportional to 7,080,189,708.96, 9,771,202,620.72 and 3,908,984,421.60 is: 5,394,697,090.72
Step by Step Solution
- Step 1: Write the proportion equation
7,080,189,708.96 : 9,771,202,620.72 = 3,908,984,421.60 : x - Step 2: Convert to fraction form
7,080,189,708.96/9,771,202,620.72 = 3,908,984,421.60/x - Step 3: Cross multiply
7,080,189,708.96x = 9,771,202,620.72 × 3,908,984,421.60 - Step 4: Simplify right side
7,080,189,708.96x = 38,195,478,824,691,572,736 - Step 5: Solve for x
x = 38,195,478,824,691,572,736/7,080,189,708.96 - Step 6: Final answer
x = 5,394,697,090.72
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1.5x scale
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.