Finding the Fourth Proportional to 747,620.20, 1,031,715.60 and 408,088.44
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Solution
The fourth proportional to 747,620.20, 1,031,715.60 and 408,088.44 is: 563,161.90
Step by Step Solution
- Step 1: Write the proportion equation
747,620.20 : 1,031,715.60 = 408,088.44 : x - Step 2: Convert to fraction form
747,620.20/1,031,715.60 = 408,088.44/x - Step 3: Cross multiply
747,620.20x = 1,031,715.60 × 408,088.44 - Step 4: Simplify right side
747,620.20x = 421,031,209,727.66 - Step 5: Solve for x
x = 421,031,209,727.66/747,620.20 - Step 6: Final answer
x = 563,161.90
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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.