Finding the Fourth Proportional to 387,029.70, 580,544.55 and 307,313.55
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Solution
The fourth proportional to 387,029.70, 580,544.55 and 307,313.55 is: 460,970.33
Step by Step Solution
- Step 1: Write the proportion equation
387,029.70 : 580,544.55 = 307,313.55 : x - Step 2: Convert to fraction form
387,029.70/580,544.55 = 307,313.55/x - Step 3: Cross multiply
387,029.70x = 580,544.55 × 307,313.55 - Step 4: Simplify right side
387,029.70x = 178,409,206,593.65 - Step 5: Solve for x
x = 178,409,206,593.65/387,029.70 - Step 6: Final answer
x = 460,970.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.