Finding the Fourth Proportional to 613,288.36, 920,120.92 and 313,979.09
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Solution
The fourth proportional to 613,288.36, 920,120.92 and 313,979.09 is: 471,065.07
Step by Step Solution
- Step 1: Write the proportion equation
613,288.36 : 920,120.92 = 313,979.09 : x - Step 2: Convert to fraction form
613,288.36/920,120.92 = 313,979.09/x - Step 3: Cross multiply
613,288.36x = 920,120.92 × 313,979.09 - Step 4: Simplify right side
613,288.36x = 288,898,723,766.01 - Step 5: Solve for x
x = 288,898,723,766.01/613,288.36 - Step 6: Final answer
x = 471,065.07
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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.