Finding the Fourth Proportional to 840,653.62, 1,260,991.44 and 279,688.12
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Solution
The fourth proportional to 840,653.62, 1,260,991.44 and 279,688.12 is: 419,535.84
Step by Step Solution
- Step 1: Write the proportion equation
840,653.62 : 1,260,991.44 = 279,688.12 : x - Step 2: Convert to fraction form
840,653.62/1,260,991.44 = 279,688.12/x - Step 3: Cross multiply
840,653.62x = 1,260,991.44 × 279,688.12 - Step 4: Simplify right side
840,653.62x = 352,684,325,189.69 - Step 5: Solve for x
x = 352,684,325,189.69/840,653.62 - Step 6: Final answer
x = 419,535.84
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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.