Finding the Fourth Proportional to 643,516.41, 888,052.75 and 357,035.81
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Solution
The fourth proportional to 643,516.41, 888,052.75 and 357,035.81 is: 492,709.48
Step by Step Solution
- Step 1: Write the proportion equation
643,516.41 : 888,052.75 = 357,035.81 : x - Step 2: Convert to fraction form
643,516.41/888,052.75 = 357,035.81/x - Step 3: Cross multiply
643,516.41x = 888,052.75 × 357,035.81 - Step 4: Simplify right side
643,516.41x = 317,066,632,918.98 - Step 5: Solve for x
x = 317,066,632,918.98/643,516.41 - Step 6: Final answer
x = 492,709.48
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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.