Finding the Fourth Proportional to 639,423.97, 882,405.17 and 352,944.16
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Solution
The fourth proportional to 639,423.97, 882,405.17 and 352,944.16 is: 487,062.99
Step by Step Solution
- Step 1: Write the proportion equation
639,423.97 : 882,405.17 = 352,944.16 : x - Step 2: Convert to fraction form
639,423.97/882,405.17 = 352,944.16/x - Step 3: Cross multiply
639,423.97x = 882,405.17 × 352,944.16 - Step 4: Simplify right side
639,423.97x = 311,439,751,505.31 - Step 5: Solve for x
x = 311,439,751,505.31/639,423.97 - Step 6: Final answer
x = 487,062.99
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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.