Finding the Fourth Proportional to 642,135.08, 886,107.48 and 355,638.08
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Solution
The fourth proportional to 642,135.08, 886,107.48 and 355,638.08 is: 490,758.99
Step by Step Solution
- Step 1: Write the proportion equation
642,135.08 : 886,107.48 = 355,638.08 : x - Step 2: Convert to fraction form
642,135.08/886,107.48 = 355,638.08/x - Step 3: Cross multiply
642,135.08x = 886,107.48 × 355,638.08 - Step 4: Simplify right side
642,135.08x = 315,133,562,860.84 - Step 5: Solve for x
x = 315,133,562,860.84/642,135.08 - Step 6: Final answer
x = 490,758.99
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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.