Finding the Fourth Proportional to 748,124.20, 1,120,955.10 and 432,029.80
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Solution
The fourth proportional to 748,124.20, 1,120,955.10 and 432,029.80 is: 647,333.70
Step by Step Solution
- Step 1: Write the proportion equation
748,124.20 : 1,120,955.10 = 432,029.80 : x - Step 2: Convert to fraction form
748,124.20/1,120,955.10 = 432,029.80/x - Step 3: Cross multiply
748,124.20x = 1,120,955.10 × 432,029.80 - Step 4: Simplify right side
748,124.20x = 484,286,007,661.98 - Step 5: Solve for x
x = 484,286,007,661.98/748,124.20 - Step 6: Final answer
x = 647,333.70
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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.