Finding the Fourth Proportional to 382,639.91, 528,771.33 and 286,980.53
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Solution
The fourth proportional to 382,639.91, 528,771.33 and 286,980.53 is: 396,579.32
Step by Step Solution
- Step 1: Write the proportion equation
382,639.91 : 528,771.33 = 286,980.53 : x - Step 2: Convert to fraction form
382,639.91/528,771.33 = 286,980.53/x - Step 3: Cross multiply
382,639.91x = 528,771.33 × 286,980.53 - Step 4: Simplify right side
382,639.91x = 151,747,073,888.35 - Step 5: Solve for x
x = 151,747,073,888.35/382,639.91 - Step 6: Final answer
x = 396,579.32
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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.