Finding the Fourth Proportional to 778,945.80, 1,168,418.70 and 280,129.80
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Solution
The fourth proportional to 778,945.80, 1,168,418.70 and 280,129.80 is: 420,194.70
Step by Step Solution
- Step 1: Write the proportion equation
778,945.80 : 1,168,418.70 = 280,129.80 : x - Step 2: Convert to fraction form
778,945.80/1,168,418.70 = 280,129.80/x - Step 3: Cross multiply
778,945.80x = 1,168,418.70 × 280,129.80 - Step 4: Simplify right side
778,945.80x = 327,308,896,747.26 - Step 5: Solve for x
x = 327,308,896,747.26/778,945.80 - Step 6: Final answer
x = 420,194.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.