Finding the Fourth Proportional to 509,489.19, 703,107.14 and 280,044.74
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Solution
The fourth proportional to 509,489.19, 703,107.14 and 280,044.74 is: 386,468.37
Step by Step Solution
- Step 1: Write the proportion equation
509,489.19 : 703,107.14 = 280,044.74 : x - Step 2: Convert to fraction form
509,489.19/703,107.14 = 280,044.74/x - Step 3: Cross multiply
509,489.19x = 703,107.14 × 280,044.74 - Step 4: Simplify right side
509,489.19x = 196,901,456,570.99 - Step 5: Solve for x
x = 196,901,456,570.99/509,489.19 - Step 6: Final answer
x = 386,468.37
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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.