Finding the Fourth Proportional to 745,489.82, 1,028,748.79 and 405,950.62
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Solution
The fourth proportional to 745,489.82, 1,028,748.79 and 405,950.62 is: 560,197.06
Step by Step Solution
- Step 1: Write the proportion equation
745,489.82 : 1,028,748.79 = 405,950.62 : x - Step 2: Convert to fraction form
745,489.82/1,028,748.79 = 405,950.62/x - Step 3: Cross multiply
745,489.82x = 1,028,748.79 × 405,950.62 - Step 4: Simplify right side
745,489.82x = 417,621,209,124.75 - Step 5: Solve for x
x = 417,621,209,124.75/745,489.82 - Step 6: Final answer
x = 560,197.06
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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.