Finding the Fourth Proportional to 490,719.70, 736,079.55 and 411,987.70
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Solution
The fourth proportional to 490,719.70, 736,079.55 and 411,987.70 is: 617,981.55
Step by Step Solution
- Step 1: Write the proportion equation
490,719.70 : 736,079.55 = 411,987.70 : x - Step 2: Convert to fraction form
490,719.70/736,079.55 = 411,987.70/x - Step 3: Cross multiply
490,719.70x = 736,079.55 × 411,987.70 - Step 4: Simplify right side
490,719.70x = 303,255,720,821.54 - Step 5: Solve for x
x = 303,255,720,821.54/490,719.70 - Step 6: Final answer
x = 617,981.55
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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.