Finding the Fourth Proportional to 815,509.74, 1,125,396.78 and 447,993.02
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Solution
The fourth proportional to 815,509.74, 1,125,396.78 and 447,993.02 is: 618,226.71
Step by Step Solution
- Step 1: Write the proportion equation
815,509.74 : 1,125,396.78 = 447,993.02 : x - Step 2: Convert to fraction form
815,509.74/1,125,396.78 = 447,993.02/x - Step 3: Cross multiply
815,509.74x = 1,125,396.78 × 447,993.02 - Step 4: Simplify right side
815,509.74x = 504,169,902,170.48 - Step 5: Solve for x
x = 504,169,902,170.48/815,509.74 - Step 6: Final answer
x = 618,226.71
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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.