Finding the Fourth Proportional to 900,882.12, 1,243,217.44 and 492,984.05
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Solution
The fourth proportional to 900,882.12, 1,243,217.44 and 492,984.05 is: 680,318.05
Step by Step Solution
- Step 1: Write the proportion equation
900,882.12 : 1,243,217.44 = 492,984.05 : x - Step 2: Convert to fraction form
900,882.12/1,243,217.44 = 492,984.05/x - Step 3: Cross multiply
900,882.12x = 1,243,217.44 × 492,984.05 - Step 4: Simplify right side
900,882.12x = 612,886,368,601.83 - Step 5: Solve for x
x = 612,886,368,601.83/900,882.12 - Step 6: Final answer
x = 680,318.05
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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.