Finding the Fourth Proportional to 12,129,660.30, 18,194,490.45 and 3,154,212.30
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Solution
The fourth proportional to 12,129,660.30, 18,194,490.45 and 3,154,212.30 is: 4,731,318.45
Step by Step Solution
- Step 1: Write the proportion equation
12,129,660.30 : 18,194,490.45 = 3,154,212.30 : x - Step 2: Convert to fraction form
12,129,660.30/18,194,490.45 = 3,154,212.30/x - Step 3: Cross multiply
12,129,660.30x = 18,194,490.45 × 3,154,212.30 - Step 4: Simplify right side
12,129,660.30x = 57,389,285,569,622.53 - Step 5: Solve for x
x = 57,389,285,569,622.53/12,129,660.30 - Step 6: Final answer
x = 4,731,318.45
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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.