Finding the Fourth Proportional to 509,809.08, 764,711.06 and 130,728.12
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Solution
The fourth proportional to 509,809.08, 764,711.06 and 130,728.12 is: 196,091.52
Step by Step Solution
- Step 1: Write the proportion equation
509,809.08 : 764,711.06 = 130,728.12 : x - Step 2: Convert to fraction form
509,809.08/764,711.06 = 130,728.12/x - Step 3: Cross multiply
509,809.08x = 764,711.06 × 130,728.12 - Step 4: Simplify right side
509,809.08x = 99,969,239,217.01 - Step 5: Solve for x
x = 99,969,239,217.01/509,809.08 - Step 6: Final answer
x = 196,091.52
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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.