Finding the Fourth Proportional to 731,884.84, 1,009,979.34 and 405,212.38
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Solution
The fourth proportional to 731,884.84, 1,009,979.34 and 405,212.38 is: 559,181.05
Step by Step Solution
- Step 1: Write the proportion equation
731,884.84 : 1,009,979.34 = 405,212.38 : x - Step 2: Convert to fraction form
731,884.84/1,009,979.34 = 405,212.38/x - Step 3: Cross multiply
731,884.84x = 1,009,979.34 × 405,212.38 - Step 4: Simplify right side
731,884.84x = 409,256,132,112.23 - Step 5: Solve for x
x = 409,256,132,112.23/731,884.84 - Step 6: Final answer
x = 559,181.05
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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.