Finding the Fourth Proportional to 1,008,651,207.70, 1,512,976,811.55 and 969,909,158.80
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Solution
The fourth proportional to 1,008,651,207.70, 1,512,976,811.55 and 969,909,158.80 is: 1,454,863,738.20
Step by Step Solution
- Step 1: Write the proportion equation
1,008,651,207.70 : 1,512,976,811.55 = 969,909,158.80 : x - Step 2: Convert to fraction form
1,008,651,207.70/1,512,976,811.55 = 969,909,158.80/x - Step 3: Cross multiply
1,008,651,207.70x = 1,512,976,811.55 × 969,909,158.80 - Step 4: Simplify right side
1,008,651,207.70x = 1,467,450,066,574,366,464 - Step 5: Solve for x
x = 1,467,450,066,574,366,464/1,008,651,207.70 - Step 6: Final answer
x = 1,454,863,738.20
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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.