Finding the Fourth Proportional to 638,616.37, 881,258.92 and 362,938.18
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Solution
The fourth proportional to 638,616.37, 881,258.92 and 362,938.18 is: 500,836.69
Step by Step Solution
- Step 1: Write the proportion equation
638,616.37 : 881,258.92 = 362,938.18 : x - Step 2: Convert to fraction form
638,616.37/881,258.92 = 362,938.18/x - Step 3: Cross multiply
638,616.37x = 881,258.92 × 362,938.18 - Step 4: Simplify right side
638,616.37x = 319,842,505,423.07 - Step 5: Solve for x
x = 319,842,505,423.07/638,616.37 - Step 6: Final answer
x = 500,836.69
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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.