Finding the Fourth Proportional to 618,414.95, 855,130.52 and 490,869.11
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Solution
The fourth proportional to 618,414.95, 855,130.52 and 490,869.11 is: 678,762.95
Step by Step Solution
- Step 1: Write the proportion equation
618,414.95 : 855,130.52 = 490,869.11 : x - Step 2: Convert to fraction form
618,414.95/855,130.52 = 490,869.11/x - Step 3: Cross multiply
618,414.95x = 855,130.52 × 490,869.11 - Step 4: Simplify right side
618,414.95x = 419,757,157,286.24 - Step 5: Solve for x
x = 419,757,157,286.24/618,414.95 - Step 6: Final answer
x = 678,762.95
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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.