Finding the Fourth Proportional to 638,904.60, 881,971.74 and 412,660.44
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Solution
The fourth proportional to 638,904.60, 881,971.74 and 412,660.44 is: 569,654.45
Step by Step Solution
- Step 1: Write the proportion equation
638,904.60 : 881,971.74 = 412,660.44 : x - Step 2: Convert to fraction form
638,904.60/881,971.74 = 412,660.44/x - Step 3: Cross multiply
638,904.60x = 881,971.74 × 412,660.44 - Step 4: Simplify right side
638,904.60x = 363,954,846,295.97 - Step 5: Solve for x
x = 363,954,846,295.97/638,904.60 - Step 6: Final answer
x = 569,654.45
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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.