Finding the Fourth Proportional to 478,728,505.12, 718,092,954.60 and 115,222,861.12
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Solution
The fourth proportional to 478,728,505.12, 718,092,954.60 and 115,222,861.12 is: 172,834,339.08
Step by Step Solution
- Step 1: Write the proportion equation
478,728,505.12 : 718,092,954.60 = 115,222,861.12 : x - Step 2: Convert to fraction form
478,728,505.12/718,092,954.60 = 115,222,861.12/x - Step 3: Cross multiply
478,728,505.12x = 718,092,954.60 × 115,222,861.12 - Step 4: Simplify right side
478,728,505.12x = 82,740,724,779,126,272 - Step 5: Solve for x
x = 82,740,724,779,126,272/478,728,505.12 - Step 6: Final answer
x = 172,834,339.08
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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.