Finding the Fourth Proportional to 640,657.24, 884,039.34 and 354,131.08
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Solution
The fourth proportional to 640,657.24, 884,039.34 and 354,131.08 is: 488,663.50
Step by Step Solution
- Step 1: Write the proportion equation
640,657.24 : 884,039.34 = 354,131.08 : x - Step 2: Convert to fraction form
640,657.24/884,039.34 = 354,131.08/x - Step 3: Cross multiply
640,657.24x = 884,039.34 × 354,131.08 - Step 4: Simplify right side
640,657.24x = 313,065,806,236.69 - Step 5: Solve for x
x = 313,065,806,236.69/640,657.24 - Step 6: Final answer
x = 488,663.50
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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.