Finding the Fourth Proportional to 764,886.38, 1,055,563.12 and 420,731.18
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Solution
The fourth proportional to 764,886.38, 1,055,563.12 and 420,731.18 is: 580,619.99
Step by Step Solution
- Step 1: Write the proportion equation
764,886.38 : 1,055,563.12 = 420,731.18 : x - Step 2: Convert to fraction form
764,886.38/1,055,563.12 = 420,731.18/x - Step 3: Cross multiply
764,886.38x = 1,055,563.12 × 420,731.18 - Step 4: Simplify right side
764,886.38x = 444,108,320,206.90 - Step 5: Solve for x
x = 444,108,320,206.90/764,886.38 - Step 6: Final answer
x = 580,619.99
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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.