Finding the Fourth Proportional to 815,487.63, 1,125,386.84 and 447,980.26
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Solution
The fourth proportional to 815,487.63, 1,125,386.84 and 447,980.26 is: 618,220.40
Step by Step Solution
- Step 1: Write the proportion equation
815,487.63 : 1,125,386.84 = 447,980.26 : x - Step 2: Convert to fraction form
815,487.63/1,125,386.84 = 447,980.26/x - Step 3: Cross multiply
815,487.63x = 1,125,386.84 × 447,980.26 - Step 4: Simplify right side
815,487.63x = 504,151,089,183.78 - Step 5: Solve for x
x = 504,151,089,183.78/815,487.63 - Step 6: Final answer
x = 618,220.40
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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.