Finding the Fourth Proportional to 664,852,338.20, 997,278,507.30 and 389,353,323.80
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Solution
The fourth proportional to 664,852,338.20, 997,278,507.30 and 389,353,323.80 is: 584,029,985.70
Step by Step Solution
- Step 1: Write the proportion equation
664,852,338.20 : 997,278,507.30 = 389,353,323.80 : x - Step 2: Convert to fraction form
664,852,338.20/997,278,507.30 = 389,353,323.80/x - Step 3: Cross multiply
664,852,338.20x = 997,278,507.30 × 389,353,323.80 - Step 4: Simplify right side
664,852,338.20x = 388,293,701,571,557,568 - Step 5: Solve for x
x = 388,293,701,571,557,568/664,852,338.20 - Step 6: Final answer
x = 584,029,985.70
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1.5x scale
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.