Finding the Fourth Proportional to 8,178,856.12, 11,286,674.64 and 4,457,720.62
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Solution
The fourth proportional to 8,178,856.12, 11,286,674.64 and 4,457,720.62 is: 6,151,574.44
Step by Step Solution
- Step 1: Write the proportion equation
8,178,856.12 : 11,286,674.64 = 4,457,720.62 : x - Step 2: Convert to fraction form
8,178,856.12/11,286,674.64 = 4,457,720.62/x - Step 3: Cross multiply
8,178,856.12x = 11,286,674.64 × 4,457,720.62 - Step 4: Simplify right side
8,178,856.12x = 50,312,842,273,959.08 - Step 5: Solve for x
x = 50,312,842,273,959.08/8,178,856.12 - Step 6: Final answer
x = 6,151,574.44
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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.