Finding the Fourth Proportional to 745,441.38, 1,028,721.06 and 405,909.63
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Solution
The fourth proportional to 745,441.38, 1,028,721.06 and 405,909.63 is: 560,161.80
Step by Step Solution
- Step 1: Write the proportion equation
745,441.38 : 1,028,721.06 = 405,909.63 : x - Step 2: Convert to fraction form
745,441.38/1,028,721.06 = 405,909.63/x - Step 3: Cross multiply
745,441.38x = 1,028,721.06 × 405,909.63 - Step 4: Simplify right side
745,441.38x = 417,567,784,837.81 - Step 5: Solve for x
x = 417,567,784,837.81/745,441.38 - Step 6: Final answer
x = 560,161.80
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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.