Finding the Fourth Proportional to 643,515.46, 888,106.48 and 353,183.13
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Solution
The fourth proportional to 643,515.46, 888,106.48 and 353,183.13 is: 487,422.99
Step by Step Solution
- Step 1: Write the proportion equation
643,515.46 : 888,106.48 = 353,183.13 : x - Step 2: Convert to fraction form
643,515.46/888,106.48 = 353,183.13/x - Step 3: Cross multiply
643,515.46x = 888,106.48 × 353,183.13 - Step 4: Simplify right side
643,515.46x = 313,664,225,496.73 - Step 5: Solve for x
x = 313,664,225,496.73/643,515.46 - Step 6: Final answer
x = 487,422.99
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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.