Finding the Fourth Proportional to 640,777.92, 884,259.84 and 354,310.08
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Solution
The fourth proportional to 640,777.92, 884,259.84 and 354,310.08 is: 488,940.34
Step by Step Solution
- Step 1: Write the proportion equation
640,777.92 : 884,259.84 = 354,310.08 : x - Step 2: Convert to fraction form
640,777.92/884,259.84 = 354,310.08/x - Step 3: Cross multiply
640,777.92x = 884,259.84 × 354,310.08 - Step 4: Simplify right side
640,777.92x = 313,302,174,651.19 - Step 5: Solve for x
x = 313,302,174,651.19/640,777.92 - Step 6: Final answer
x = 488,940.34
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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.