Finding the Fourth Proportional to 7,781,244,311.36, 10,738,102,954.20 and 4,212,950,780
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Solution
The fourth proportional to 7,781,244,311.36, 10,738,102,954.20 and 4,212,950,780 is: 5,813,864,390.63
Step by Step Solution
- Step 1: Write the proportion equation
7,781,244,311.36 : 10,738,102,954.20 = 4,212,950,780 : x - Step 2: Convert to fraction form
7,781,244,311.36/10,738,102,954.20 = 4,212,950,780/x - Step 3: Cross multiply
7,781,244,311.36x = 10,738,102,954.20 × 4,212,950,780 - Step 4: Simplify right side
7,781,244,311.36x = 45,239,099,216,617,193,472 - Step 5: Solve for x
x = 45,239,099,216,617,193,472/7,781,244,311.36 - Step 6: Final answer
x = 5,813,864,390.63
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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.