Finding the Fourth Proportional to 930,923,138.70, 1,396,384,708.05 and 852,317,109.90
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Solution
The fourth proportional to 930,923,138.70, 1,396,384,708.05 and 852,317,109.90 is: 1,278,475,664.85
Step by Step Solution
- Step 1: Write the proportion equation
930,923,138.70 : 1,396,384,708.05 = 852,317,109.90 : x - Step 2: Convert to fraction form
930,923,138.70/1,396,384,708.05 = 852,317,109.90/x - Step 3: Cross multiply
930,923,138.70x = 1,396,384,708.05 × 852,317,109.90 - Step 4: Simplify right side
930,923,138.70x = 1,190,162,578,673,731,072 - Step 5: Solve for x
x = 1,190,162,578,673,731,072/930,923,138.70 - Step 6: Final answer
x = 1,278,475,664.85
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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.