Finding the Fourth Proportional to 540,306.38, 809,735.13 and 420,507.99
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Solution
The fourth proportional to 540,306.38, 809,735.13 and 420,507.99 is: 630,198.17
Step by Step Solution
- Step 1: Write the proportion equation
540,306.38 : 809,735.13 = 420,507.99 : x - Step 2: Convert to fraction form
540,306.38/809,735.13 = 420,507.99/x - Step 3: Cross multiply
540,306.38x = 809,735.13 × 420,507.99 - Step 4: Simplify right side
540,306.38x = 340,500,091,948.69 - Step 5: Solve for x
x = 340,500,091,948.69/540,306.38 - Step 6: Final answer
x = 630,198.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.