Finding the Fourth Proportional to 853,122.90, 1,278,700.02 and 320,304.09
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Solution
The fourth proportional to 853,122.90, 1,278,700.02 and 320,304.09 is: 480,086.57
Step by Step Solution
- Step 1: Write the proportion equation
853,122.90 : 1,278,700.02 = 320,304.09 : x - Step 2: Convert to fraction form
853,122.90/1,278,700.02 = 320,304.09/x - Step 3: Cross multiply
853,122.90x = 1,278,700.02 × 320,304.09 - Step 4: Simplify right side
853,122.90x = 409,572,846,289.08 - Step 5: Solve for x
x = 409,572,846,289.08/853,122.90 - Step 6: Final answer
x = 480,086.57
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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.