Finding the Fourth Proportional to 643,519.07, 888,053.90 and 353,135.53
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Solution
The fourth proportional to 643,519.07, 888,053.90 and 353,135.53 is: 487,325.70
Step by Step Solution
- Step 1: Write the proportion equation
643,519.07 : 888,053.90 = 353,135.53 : x - Step 2: Convert to fraction form
643,519.07/888,053.90 = 353,135.53/x - Step 3: Cross multiply
643,519.07x = 888,053.90 × 353,135.53 - Step 4: Simplify right side
643,519.07x = 313,603,381,759.09 - Step 5: Solve for x
x = 313,603,381,759.09/643,519.07 - Step 6: Final answer
x = 487,325.70
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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.