Finding the Fourth Proportional to 489,939.20, 734,908.80 and 411,207.20
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Solution
The fourth proportional to 489,939.20, 734,908.80 and 411,207.20 is: 616,810.80
Step by Step Solution
- Step 1: Write the proportion equation
489,939.20 : 734,908.80 = 411,207.20 : x - Step 2: Convert to fraction form
489,939.20/734,908.80 = 411,207.20/x - Step 3: Cross multiply
489,939.20x = 734,908.80 × 411,207.20 - Step 4: Simplify right side
489,939.20x = 302,199,789,903.36 - Step 5: Solve for x
x = 302,199,789,903.36/489,939.20 - Step 6: Final answer
x = 616,810.80
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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.