Finding the Fourth Proportional to 778,485.09, 1,074,310.09 and 434,321.07
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Solution
The fourth proportional to 778,485.09, 1,074,310.09 and 434,321.07 is: 599,363.45
Step by Step Solution
- Step 1: Write the proportion equation
778,485.09 : 1,074,310.09 = 434,321.07 : x - Step 2: Convert to fraction form
778,485.09/1,074,310.09 = 434,321.07/x - Step 3: Cross multiply
778,485.09x = 1,074,310.09 × 434,321.07 - Step 4: Simplify right side
778,485.09x = 466,595,503,286.12 - Step 5: Solve for x
x = 466,595,503,286.12/778,485.09 - Step 6: Final answer
x = 599,363.45
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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.