Finding the Fourth Proportional to 2,128,559,933.70, 3,192,839,900.55 and 1,257,846,999.30
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Solution
The fourth proportional to 2,128,559,933.70, 3,192,839,900.55 and 1,257,846,999.30 is: 1,886,770,498.95
Step by Step Solution
- Step 1: Write the proportion equation
2,128,559,933.70 : 3,192,839,900.55 = 1,257,846,999.30 : x - Step 2: Convert to fraction form
2,128,559,933.70/3,192,839,900.55 = 1,257,846,999.30/x - Step 3: Cross multiply
2,128,559,933.70x = 3,192,839,900.55 × 1,257,846,999.30 - Step 4: Simplify right side
2,128,559,933.70x = 4,016,104,088,152,128,000 - Step 5: Solve for x
x = 4,016,104,088,152,128,000/2,128,559,933.70 - Step 6: Final answer
x = 1,886,770,498.95
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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.