Finding the Fourth Proportional to 3,059,787,098.40, 4,589,680,647.60 and 989,718,115.20
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Solution
The fourth proportional to 3,059,787,098.40, 4,589,680,647.60 and 989,718,115.20 is: 1,484,577,172.80
Step by Step Solution
- Step 1: Write the proportion equation
3,059,787,098.40 : 4,589,680,647.60 = 989,718,115.20 : x - Step 2: Convert to fraction form
3,059,787,098.40/4,589,680,647.60 = 989,718,115.20/x - Step 3: Cross multiply
3,059,787,098.40x = 4,589,680,647.60 × 989,718,115.20 - Step 4: Simplify right side
3,059,787,098.40x = 4,542,490,079,912,587,776 - Step 5: Solve for x
x = 4,542,490,079,912,587,776/3,059,787,098.40 - Step 6: Final answer
x = 1,484,577,172.80
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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.