Finding the Fourth Proportional to 979,423.70, 1,469,135.55 and 979,423.70
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Solution
The fourth proportional to 979,423.70, 1,469,135.55 and 979,423.70 is: 1,469,135.55
Step by Step Solution
- Step 1: Write the proportion equation
979,423.70 : 1,469,135.55 = 979,423.70 : x - Step 2: Convert to fraction form
979,423.70/1,469,135.55 = 979,423.70/x - Step 3: Cross multiply
979,423.70x = 1,469,135.55 × 979,423.70 - Step 4: Simplify right side
979,423.70x = 1,438,906,176,182.54 - Step 5: Solve for x
x = 1,438,906,176,182.54/979,423.70 - Step 6: Final answer
x = 1,469,135.55
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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.