Finding the Fourth Proportional to 520,107.73, 780,338.84 and 280,246.23
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Solution
The fourth proportional to 520,107.73, 780,338.84 and 280,246.23 is: 420,464.85
Step by Step Solution
- Step 1: Write the proportion equation
520,107.73 : 780,338.84 = 280,246.23 : x - Step 2: Convert to fraction form
520,107.73/780,338.84 = 280,246.23/x - Step 3: Cross multiply
520,107.73x = 780,338.84 × 280,246.23 - Step 4: Simplify right side
520,107.73x = 218,687,017,419.54 - Step 5: Solve for x
x = 218,687,017,419.54/520,107.73 - Step 6: Final answer
x = 420,464.85
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1.5x scale
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.