Finding the Fourth Proportional to 663,640.55, 915,901.70 and 377,203.68
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Solution
The fourth proportional to 663,640.55, 915,901.70 and 377,203.68 is: 520,585.27
Step by Step Solution
- Step 1: Write the proportion equation
663,640.55 : 915,901.70 = 377,203.68 : x - Step 2: Convert to fraction form
663,640.55/915,901.70 = 377,203.68/x - Step 3: Cross multiply
663,640.55x = 915,901.70 × 377,203.68 - Step 4: Simplify right side
663,640.55x = 345,481,489,872.24 - Step 5: Solve for x
x = 345,481,489,872.24/663,640.55 - Step 6: Final answer
x = 520,585.27
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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.