Finding the Fourth Proportional to 778,857.70, 1,168,286.55 and 405,609.70
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Solution
The fourth proportional to 778,857.70, 1,168,286.55 and 405,609.70 is: 608,414.55
Step by Step Solution
- Step 1: Write the proportion equation
778,857.70 : 1,168,286.55 = 405,609.70 : x - Step 2: Convert to fraction form
778,857.70/1,168,286.55 = 405,609.70/x - Step 3: Cross multiply
778,857.70x = 1,168,286.55 × 405,609.70 - Step 4: Simplify right side
778,857.70x = 473,868,357,059.54 - Step 5: Solve for x
x = 473,868,357,059.54/778,857.70 - Step 6: Final answer
x = 608,414.55
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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.