Finding the Fourth Proportional to 500,338.12, 690,453.14 and 285,474.28
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Solution
The fourth proportional to 500,338.12, 690,453.14 and 285,474.28 is: 393,946.82
Step by Step Solution
- Step 1: Write the proportion equation
500,338.12 : 690,453.14 = 285,474.28 : x - Step 2: Convert to fraction form
500,338.12/690,453.14 = 285,474.28/x - Step 3: Cross multiply
500,338.12x = 690,453.14 × 285,474.28 - Step 4: Simplify right side
500,338.12x = 197,106,613,015.24 - Step 5: Solve for x
x = 197,106,613,015.24/500,338.12 - Step 6: Final answer
x = 393,946.82
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1.5x scale
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.