Finding the Fourth Proportional to 1,379,119,235.60, 2,068,678,853.40 and 862,133,430.80
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Solution
The fourth proportional to 1,379,119,235.60, 2,068,678,853.40 and 862,133,430.80 is: 1,293,200,146.20
Step by Step Solution
- Step 1: Write the proportion equation
1,379,119,235.60 : 2,068,678,853.40 = 862,133,430.80 : x - Step 2: Convert to fraction form
1,379,119,235.60/2,068,678,853.40 = 862,133,430.80/x - Step 3: Cross multiply
1,379,119,235.60x = 2,068,678,853.40 × 862,133,430.80 - Step 4: Simplify right side
1,379,119,235.60x = 1,783,477,197,105,152,256 - Step 5: Solve for x
x = 1,783,477,197,105,152,256/1,379,119,235.60 - Step 6: Final answer
x = 1,293,200,146.20
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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.