Finding the Fourth Proportional to 392,806.11, 589,232.55 and 122,984.79
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Solution
The fourth proportional to 392,806.11, 589,232.55 and 122,984.79 is: 184,484.51
Step by Step Solution
- Step 1: Write the proportion equation
392,806.11 : 589,232.55 = 122,984.79 : x - Step 2: Convert to fraction form
392,806.11/589,232.55 = 122,984.79/x - Step 3: Cross multiply
392,806.11x = 589,232.55 × 122,984.79 - Step 4: Simplify right side
392,806.11x = 72,466,641,422.91 - Step 5: Solve for x
x = 72,466,641,422.91/392,806.11 - Step 6: Final answer
x = 184,484.51
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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.