Finding the Fourth Proportional to 1,379,119,246.60, 2,068,678,869.90 and 862,133,441.80
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Solution
The fourth proportional to 1,379,119,246.60, 2,068,678,869.90 and 862,133,441.80 is: 1,293,200,162.70
Step by Step Solution
- Step 1: Write the proportion equation
1,379,119,246.60 : 2,068,678,869.90 = 862,133,441.80 : x - Step 2: Convert to fraction form
1,379,119,246.60/2,068,678,869.90 = 862,133,441.80/x - Step 3: Cross multiply
1,379,119,246.60x = 2,068,678,869.90 × 862,133,441.80 - Step 4: Simplify right side
1,379,119,246.60x = 1,783,477,234,085,821,440 - Step 5: Solve for x
x = 1,783,477,234,085,821,440/1,379,119,246.60 - Step 6: Final answer
x = 1,293,200,162.70
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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.