Finding the Fourth Proportional to 993,963.80, 1,490,945.70 and 329,115.80
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Solution
The fourth proportional to 993,963.80, 1,490,945.70 and 329,115.80 is: 493,673.70
Step by Step Solution
- Step 1: Write the proportion equation
993,963.80 : 1,490,945.70 = 329,115.80 : x - Step 2: Convert to fraction form
993,963.80/1,490,945.70 = 329,115.80/x - Step 3: Cross multiply
993,963.80x = 1,490,945.70 × 329,115.80 - Step 4: Simplify right side
993,963.80x = 490,693,786,812.06 - Step 5: Solve for x
x = 490,693,786,812.06/993,963.80 - Step 6: Final answer
x = 493,673.70
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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.