Finding the Fourth Proportional to 745,488.82, 1,028,747.41 and 405,949.62
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Solution
The fourth proportional to 745,488.82, 1,028,747.41 and 405,949.62 is: 560,195.68
Step by Step Solution
- Step 1: Write the proportion equation
745,488.82 : 1,028,747.41 = 405,949.62 : x - Step 2: Convert to fraction form
745,488.82/1,028,747.41 = 405,949.62/x - Step 3: Cross multiply
745,488.82x = 1,028,747.41 × 405,949.62 - Step 4: Simplify right side
745,488.82x = 417,619,620,165.48 - Step 5: Solve for x
x = 417,619,620,165.48/745,488.82 - Step 6: Final answer
x = 560,195.68
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1.5x scale
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.