Finding the Fourth Proportional to 411,107.20, 616,660.80 and 388,297.60
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Solution
The fourth proportional to 411,107.20, 616,660.80 and 388,297.60 is: 582,446.40
Step by Step Solution
- Step 1: Write the proportion equation
411,107.20 : 616,660.80 = 388,297.60 : x - Step 2: Convert to fraction form
411,107.20/616,660.80 = 388,297.60/x - Step 3: Cross multiply
411,107.20x = 616,660.80 × 388,297.60 - Step 4: Simplify right side
411,107.20x = 239,447,908,654.08 - Step 5: Solve for x
x = 239,447,908,654.08/411,107.20 - Step 6: Final answer
x = 582,446.40
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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.