Finding the Fourth Proportional to 681,142.08, 939,975.72 and 394,828.08
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Solution
The fourth proportional to 681,142.08, 939,975.72 and 394,828.08 is: 544,862.55
Step by Step Solution
- Step 1: Write the proportion equation
681,142.08 : 939,975.72 = 394,828.08 : x - Step 2: Convert to fraction form
681,142.08/939,975.72 = 394,828.08/x - Step 3: Cross multiply
681,142.08x = 939,975.72 × 394,828.08 - Step 4: Simplify right side
681,142.08x = 371,128,808,774.22 - Step 5: Solve for x
x = 371,128,808,774.22/681,142.08 - Step 6: Final answer
x = 544,862.55
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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.