Finding the Fourth Proportional to 396,487.94, 546,399.14 and 389,201.18
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Solution
The fourth proportional to 396,487.94, 546,399.14 and 389,201.18 is: 536,357.27
Step by Step Solution
- Step 1: Write the proportion equation
396,487.94 : 546,399.14 = 389,201.18 : x - Step 2: Convert to fraction form
396,487.94/546,399.14 = 389,201.18/x - Step 3: Cross multiply
396,487.94x = 546,399.14 × 389,201.18 - Step 4: Simplify right side
396,487.94x = 212,659,190,038.99 - Step 5: Solve for x
x = 212,659,190,038.99/396,487.94 - Step 6: Final answer
x = 536,357.27
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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.