Finding the Fourth Proportional to 674,228.81, 930,435.76 and 387,742.75
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Solution
The fourth proportional to 674,228.81, 930,435.76 and 387,742.75 is: 535,084.99
Step by Step Solution
- Step 1: Write the proportion equation
674,228.81 : 930,435.76 = 387,742.75 : x - Step 2: Convert to fraction form
674,228.81/930,435.76 = 387,742.75/x - Step 3: Cross multiply
674,228.81x = 930,435.76 × 387,742.75 - Step 4: Simplify right side
674,228.81x = 360,769,718,439.33 - Step 5: Solve for x
x = 360,769,718,439.33/674,228.81 - Step 6: Final answer
x = 535,084.99
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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.