Finding the Fourth Proportional to 691,923.36, 954,859.92 and 405,451.68
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Solution
The fourth proportional to 691,923.36, 954,859.92 and 405,451.68 is: 559,526.65
Step by Step Solution
- Step 1: Write the proportion equation
691,923.36 : 954,859.92 = 405,451.68 : x - Step 2: Convert to fraction form
691,923.36/954,859.92 = 405,451.68/x - Step 3: Cross multiply
691,923.36x = 954,859.92 × 405,451.68 - Step 4: Simplify right side
691,923.36x = 387,149,558,728.67 - Step 5: Solve for x
x = 387,149,558,728.67/691,923.36 - Step 6: Final answer
x = 559,526.65
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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.