Finding the Fourth Proportional to 987,543.80, 1,481,315.70 and 239,589.80
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Solution
The fourth proportional to 987,543.80, 1,481,315.70 and 239,589.80 is: 359,384.70
Step by Step Solution
- Step 1: Write the proportion equation
987,543.80 : 1,481,315.70 = 239,589.80 : x - Step 2: Convert to fraction form
987,543.80/1,481,315.70 = 239,589.80/x - Step 3: Cross multiply
987,543.80x = 1,481,315.70 × 239,589.80 - Step 4: Simplify right side
987,543.80x = 354,908,132,299.86 - Step 5: Solve for x
x = 354,908,132,299.86/987,543.80 - Step 6: Final answer
x = 359,384.70
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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.