Finding the Fourth Proportional to 874,128,394.36, 1,206,300,319.80 and 477,651,375.70
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Solution
The fourth proportional to 874,128,394.36, 1,206,300,319.80 and 477,651,375.70 is: 659,160,611.85
Step by Step Solution
- Step 1: Write the proportion equation
874,128,394.36 : 1,206,300,319.80 = 477,651,375.70 : x - Step 2: Convert to fraction form
874,128,394.36/1,206,300,319.80 = 477,651,375.70/x - Step 3: Cross multiply
874,128,394.36x = 1,206,300,319.80 × 477,651,375.70 - Step 4: Simplify right side
874,128,394.36x = 576,191,007,259,819,904 - Step 5: Solve for x
x = 576,191,007,259,819,904/874,128,394.36 - Step 6: Final answer
x = 659,160,611.85
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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.