Finding the Fourth Proportional to 505,698.87, 697,885.74 and 290,839.19
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Solution
The fourth proportional to 505,698.87, 697,885.74 and 290,839.19 is: 401,370.32
Step by Step Solution
- Step 1: Write the proportion equation
505,698.87 : 697,885.74 = 290,839.19 : x - Step 2: Convert to fraction form
505,698.87/697,885.74 = 290,839.19/x - Step 3: Cross multiply
505,698.87x = 697,885.74 × 290,839.19 - Step 4: Simplify right side
505,698.87x = 202,972,519,844.72 - Step 5: Solve for x
x = 202,972,519,844.72/505,698.87 - Step 6: Final answer
x = 401,370.32
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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.