Finding the Fourth Proportional to 511,412.64, 765,983.99 and 330,917.70
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Solution
The fourth proportional to 511,412.64, 765,983.99 and 330,917.70 is: 495,642.16
Step by Step Solution
- Step 1: Write the proportion equation
511,412.64 : 765,983.99 = 330,917.70 : x - Step 2: Convert to fraction form
511,412.64/765,983.99 = 330,917.70/x - Step 3: Cross multiply
511,412.64x = 765,983.99 × 330,917.70 - Step 4: Simplify right side
511,412.64x = 253,477,663,907.36 - Step 5: Solve for x
x = 253,477,663,907.36/511,412.64 - Step 6: Final answer
x = 495,642.16
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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.