Finding the Fourth Proportional to 683,423.70, 1,025,135.55 and 644,057.70
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Solution
The fourth proportional to 683,423.70, 1,025,135.55 and 644,057.70 is: 966,086.55
Step by Step Solution
- Step 1: Write the proportion equation
683,423.70 : 1,025,135.55 = 644,057.70 : x - Step 2: Convert to fraction form
683,423.70/1,025,135.55 = 644,057.70/x - Step 3: Cross multiply
683,423.70x = 1,025,135.55 × 644,057.70 - Step 4: Simplify right side
683,423.70x = 660,246,444,521.24 - Step 5: Solve for x
x = 660,246,444,521.24/683,423.70 - Step 6: Final answer
x = 966,086.55
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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.