Finding the Fourth Proportional to 815,479.85, 1,125,376.11 and 447,972.49
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Solution
The fourth proportional to 815,479.85, 1,125,376.11 and 447,972.49 is: 618,209.68
Step by Step Solution
- Step 1: Write the proportion equation
815,479.85 : 1,125,376.11 = 447,972.49 : x - Step 2: Convert to fraction form
815,479.85/1,125,376.11 = 447,972.49/x - Step 3: Cross multiply
815,479.85x = 1,125,376.11 × 447,972.49 - Step 4: Simplify right side
815,479.85x = 504,137,530,316.47 - Step 5: Solve for x
x = 504,137,530,316.47/815,479.85 - Step 6: Final answer
x = 618,209.68
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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.