Finding the Fourth Proportional to 979,874,106, 1,351,317,960.96 and 715,136,764.56
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Solution
The fourth proportional to 979,874,106, 1,351,317,960.96 and 715,136,764.56 is: 986,225,831.03
Step by Step Solution
- Step 1: Write the proportion equation
979,874,106 : 1,351,317,960.96 = 715,136,764.56 : x - Step 2: Convert to fraction form
979,874,106/1,351,317,960.96 = 715,136,764.56/x - Step 3: Cross multiply
979,874,106x = 1,351,317,960.96 × 715,136,764.56 - Step 4: Simplify right side
979,874,106x = 966,377,154,492,750,720 - Step 5: Solve for x
x = 966,377,154,492,750,720/979,874,106 - Step 6: Final answer
x = 986,225,831.03
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1.5x scale
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.