Finding the Fourth Proportional to 640,679.09, 884,155.60 and 354,217.63
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Solution
The fourth proportional to 640,679.09, 884,155.60 and 354,217.63 is: 488,830.53
Step by Step Solution
- Step 1: Write the proportion equation
640,679.09 : 884,155.60 = 354,217.63 : x - Step 2: Convert to fraction form
640,679.09/884,155.60 = 354,217.63/x - Step 3: Cross multiply
640,679.09x = 884,155.60 × 354,217.63 - Step 4: Simplify right side
640,679.09x = 313,183,501,183.23 - Step 5: Solve for x
x = 313,183,501,183.23/640,679.09 - Step 6: Final answer
x = 488,830.53
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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.