Finding the Fourth Proportional to 557,555.36, 769,370.88 and 315,789.68
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Solution
The fourth proportional to 557,555.36, 769,370.88 and 315,789.68 is: 435,758.31
Step by Step Solution
- Step 1: Write the proportion equation
557,555.36 : 769,370.88 = 315,789.68 : x - Step 2: Convert to fraction form
557,555.36/769,370.88 = 315,789.68/x - Step 3: Cross multiply
557,555.36x = 769,370.88 × 315,789.68 - Step 4: Simplify right side
557,555.36x = 242,959,383,996.52 - Step 5: Solve for x
x = 242,959,383,996.52/557,555.36 - Step 6: Final answer
x = 435,758.31
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1.5x scale
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.