Finding the Fourth Proportional to 615,861.38, 849,872.12 and 343,921.70
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Solution
The fourth proportional to 615,861.38, 849,872.12 and 343,921.70 is: 474,602.68
Step by Step Solution
- Step 1: Write the proportion equation
615,861.38 : 849,872.12 = 343,921.70 : x - Step 2: Convert to fraction form
615,861.38/849,872.12 = 343,921.70/x - Step 3: Cross multiply
615,861.38x = 849,872.12 × 343,921.70 - Step 4: Simplify right side
615,861.38x = 292,289,464,293.00 - Step 5: Solve for x
x = 292,289,464,293.00/615,861.38 - Step 6: Final answer
x = 474,602.68
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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.