Finding the Fourth Proportional to 710,717.09, 980,789.67 and 388,427.09
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Solution
The fourth proportional to 710,717.09, 980,789.67 and 388,427.09 is: 536,029.43
Step by Step Solution
- Step 1: Write the proportion equation
710,717.09 : 980,789.67 = 388,427.09 : x - Step 2: Convert to fraction form
710,717.09/980,789.67 = 388,427.09/x - Step 3: Cross multiply
710,717.09x = 980,789.67 × 388,427.09 - Step 4: Simplify right side
710,717.09x = 380,965,277,420.16 - Step 5: Solve for x
x = 380,965,277,420.16/710,717.09 - Step 6: Final answer
x = 536,029.43
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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.