Finding the Fourth Proportional to 505,634,314.26, 758,451,471.39 and 142,128,670.26
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Solution
The fourth proportional to 505,634,314.26, 758,451,471.39 and 142,128,670.26 is: 213,193,005.39
Step by Step Solution
- Step 1: Write the proportion equation
505,634,314.26 : 758,451,471.39 = 142,128,670.26 : x - Step 2: Convert to fraction form
505,634,314.26/758,451,471.39 = 142,128,670.26/x - Step 3: Cross multiply
505,634,314.26x = 758,451,471.39 × 142,128,670.26 - Step 4: Simplify right side
505,634,314.26x = 107,797,699,085,401,120 - Step 5: Solve for x
x = 107,797,699,085,401,120/505,634,314.26 - Step 6: Final answer
x = 213,193,005.39
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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.