Finding the Fourth Proportional to 744,921.36, 1,028,009.88 and 405,408.24
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Solution
The fourth proportional to 744,921.36, 1,028,009.88 and 405,408.24 is: 559,473.39
Step by Step Solution
- Step 1: Write the proportion equation
744,921.36 : 1,028,009.88 = 405,408.24 : x - Step 2: Convert to fraction form
744,921.36/1,028,009.88 = 405,408.24/x - Step 3: Cross multiply
744,921.36x = 1,028,009.88 × 405,408.24 - Step 4: Simplify right side
744,921.36x = 416,763,676,153.41 - Step 5: Solve for x
x = 416,763,676,153.41/744,921.36 - Step 6: Final answer
x = 559,473.39
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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.