Finding the Fourth Proportional to 490,990.48, 677,560.44 and 276,130.48
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Solution
The fourth proportional to 490,990.48, 677,560.44 and 276,130.48 is: 381,056.45
Step by Step Solution
- Step 1: Write the proportion equation
490,990.48 : 677,560.44 = 276,130.48 : x - Step 2: Convert to fraction form
490,990.48/677,560.44 = 276,130.48/x - Step 3: Cross multiply
490,990.48x = 677,560.44 × 276,130.48 - Step 4: Simplify right side
490,990.48x = 187,095,089,526.21 - Step 5: Solve for x
x = 187,095,089,526.21/490,990.48 - Step 6: Final answer
x = 381,056.45
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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.