Finding the Fourth Proportional to 643,202.48, 887,476.36 and 371,212.72
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Solution
The fourth proportional to 643,202.48, 887,476.36 and 371,212.72 is: 512,190.99
Step by Step Solution
- Step 1: Write the proportion equation
643,202.48 : 887,476.36 = 371,212.72 : x - Step 2: Convert to fraction form
643,202.48/887,476.36 = 371,212.72/x - Step 3: Cross multiply
643,202.48x = 887,476.36 × 371,212.72 - Step 4: Simplify right side
643,202.48x = 329,442,513,531.30 - Step 5: Solve for x
x = 329,442,513,531.30/643,202.48 - Step 6: Final answer
x = 512,190.99
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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.