Finding the Fourth Proportional to 643,153.20, 887,545.37 and 352,758.81
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Solution
The fourth proportional to 643,153.20, 887,545.37 and 352,758.81 is: 486,803.85
Step by Step Solution
- Step 1: Write the proportion equation
643,153.20 : 887,545.37 = 352,758.81 : x - Step 2: Convert to fraction form
643,153.20/887,545.37 = 352,758.81/x - Step 3: Cross multiply
643,153.20x = 887,545.37 × 352,758.81 - Step 4: Simplify right side
643,153.20x = 313,089,450,768.13 - Step 5: Solve for x
x = 313,089,450,768.13/643,153.20 - Step 6: Final answer
x = 486,803.85
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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.