Finding the Fourth Proportional to 638,629.92, 881,315.28 and 352,160.28
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Solution
The fourth proportional to 638,629.92, 881,315.28 and 352,160.28 is: 485,984.49
Step by Step Solution
- Step 1: Write the proportion equation
638,629.92 : 881,315.28 = 352,160.28 : x - Step 2: Convert to fraction form
638,629.92/881,315.28 = 352,160.28/x - Step 3: Cross multiply
638,629.92x = 881,315.28 × 352,160.28 - Step 4: Simplify right side
638,629.92x = 310,364,235,773.08 - Step 5: Solve for x
x = 310,364,235,773.08/638,629.92 - Step 6: Final answer
x = 485,984.49
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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.