Finding the Fourth Proportional to 740,651.85, 1,022,162.49 and 418,421.09
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Solution
The fourth proportional to 740,651.85, 1,022,162.49 and 418,421.09 is: 577,456.66
Step by Step Solution
- Step 1: Write the proportion equation
740,651.85 : 1,022,162.49 = 418,421.09 : x - Step 2: Convert to fraction form
740,651.85/1,022,162.49 = 418,421.09/x - Step 3: Cross multiply
740,651.85x = 1,022,162.49 × 418,421.09 - Step 4: Simplify right side
740,651.85x = 427,694,345,778.32 - Step 5: Solve for x
x = 427,694,345,778.32/740,651.85 - Step 6: Final answer
x = 577,456.66
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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.