Finding the Fourth Proportional to 784,245.12, 1,081,393.77 and 542,107.32
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Solution
The fourth proportional to 784,245.12, 1,081,393.77 and 542,107.32 is: 747,510.52
Step by Step Solution
- Step 1: Write the proportion equation
784,245.12 : 1,081,393.77 = 542,107.32 : x - Step 2: Convert to fraction form
784,245.12/1,081,393.77 = 542,107.32/x - Step 3: Cross multiply
784,245.12x = 1,081,393.77 × 542,107.32 - Step 4: Simplify right side
784,245.12x = 586,231,478,519.40 - Step 5: Solve for x
x = 586,231,478,519.40/784,245.12 - Step 6: Final answer
x = 747,510.52
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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.