Finding the Fourth Proportional to 625,428.38, 863,183.80 and 396,006.99
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Solution
The fourth proportional to 625,428.38, 863,183.80 and 396,006.99 is: 546,548.30
Step by Step Solution
- Step 1: Write the proportion equation
625,428.38 : 863,183.80 = 396,006.99 : x - Step 2: Convert to fraction form
625,428.38/863,183.80 = 396,006.99/x - Step 3: Cross multiply
625,428.38x = 863,183.80 × 396,006.99 - Step 4: Simplify right side
625,428.38x = 341,826,818,454.76 - Step 5: Solve for x
x = 341,826,818,454.76/625,428.38 - Step 6: Final answer
x = 546,548.30
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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.