Finding the Fourth Proportional to 720,890.24, 994,788.36 and 398,580.96
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Solution
The fourth proportional to 720,890.24, 994,788.36 and 398,580.96 is: 550,019.51
Step by Step Solution
- Step 1: Write the proportion equation
720,890.24 : 994,788.36 = 398,580.96 : x - Step 2: Convert to fraction form
720,890.24/994,788.36 = 398,580.96/x - Step 3: Cross multiply
720,890.24x = 994,788.36 × 398,580.96 - Step 4: Simplify right side
720,890.24x = 396,503,699,525.63 - Step 5: Solve for x
x = 396,503,699,525.63/720,890.24 - Step 6: Final answer
x = 550,019.51
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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.