Finding the Fourth Proportional to 714,430.21, 985,926.41 and 392,170.27
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Solution
The fourth proportional to 714,430.21, 985,926.41 and 392,170.27 is: 541,201.95
Step by Step Solution
- Step 1: Write the proportion equation
714,430.21 : 985,926.41 = 392,170.27 : x - Step 2: Convert to fraction form
714,430.21/985,926.41 = 392,170.27/x - Step 3: Cross multiply
714,430.21x = 985,926.41 × 392,170.27 - Step 4: Simplify right side
714,430.21x = 386,651,024,448.98 - Step 5: Solve for x
x = 386,651,024,448.98/714,430.21 - Step 6: Final answer
x = 541,201.95
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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.