Finding the Fourth Proportional to 987,386.26, 1,481,079.40 and 239,432.26
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Solution
The fourth proportional to 987,386.26, 1,481,079.40 and 239,432.26 is: 359,148.39
Step by Step Solution
- Step 1: Write the proportion equation
987,386.26 : 1,481,079.40 = 239,432.26 : x - Step 2: Convert to fraction form
987,386.26/1,481,079.40 = 239,432.26/x - Step 3: Cross multiply
987,386.26x = 1,481,079.40 × 239,432.26 - Step 4: Simplify right side
987,386.26x = 354,618,187,981.44 - Step 5: Solve for x
x = 354,618,187,981.44/987,386.26 - Step 6: Final answer
x = 359,148.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.