Finding the Fourth Proportional to 382,638.21, 528,769.00 and 286,978.83
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Solution
The fourth proportional to 382,638.21, 528,769.00 and 286,978.83 is: 396,576.99
Step by Step Solution
- Step 1: Write the proportion equation
382,638.21 : 528,769.00 = 286,978.83 : x - Step 2: Convert to fraction form
382,638.21/528,769.00 = 286,978.83/x - Step 3: Cross multiply
382,638.21x = 528,769.00 × 286,978.83 - Step 4: Simplify right side
382,638.21x = 151,745,507,336.11 - Step 5: Solve for x
x = 151,745,507,336.11/382,638.21 - Step 6: Final answer
x = 396,576.99
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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.