Finding the Fourth Proportional to 758,628.18, 1,138,108.73 and 285,313.59
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Solution
The fourth proportional to 758,628.18, 1,138,108.73 and 285,313.59 is: 428,032.99
Step by Step Solution
- Step 1: Write the proportion equation
758,628.18 : 1,138,108.73 = 285,313.59 : x - Step 2: Convert to fraction form
758,628.18/1,138,108.73 = 285,313.59/x - Step 3: Cross multiply
758,628.18x = 1,138,108.73 × 285,313.59 - Step 4: Simplify right side
758,628.18x = 324,717,886,140.07 - Step 5: Solve for x
x = 324,717,886,140.07/758,628.18 - Step 6: Final answer
x = 428,032.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.