Finding the Fourth Proportional to 513,118.20, 708,104.16 and 286,763.70
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Solution
The fourth proportional to 513,118.20, 708,104.16 and 286,763.70 is: 395,734.49
Step by Step Solution
- Step 1: Write the proportion equation
513,118.20 : 708,104.16 = 286,763.70 : x - Step 2: Convert to fraction form
513,118.20/708,104.16 = 286,763.70/x - Step 3: Cross multiply
513,118.20x = 708,104.16 × 286,763.70 - Step 4: Simplify right side
513,118.20x = 203,058,568,906.99 - Step 5: Solve for x
x = 203,058,568,906.99/513,118.20 - Step 6: Final answer
x = 395,734.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.