Finding the Fourth Proportional to 513,841.20, 770,761.80 and 489,346.80
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Solution
The fourth proportional to 513,841.20, 770,761.80 and 489,346.80 is: 734,020.20
Step by Step Solution
- Step 1: Write the proportion equation
513,841.20 : 770,761.80 = 489,346.80 : x - Step 2: Convert to fraction form
513,841.20/770,761.80 = 489,346.80/x - Step 3: Cross multiply
513,841.20x = 770,761.80 × 489,346.80 - Step 4: Simplify right side
513,841.20x = 377,169,820,392.24 - Step 5: Solve for x
x = 377,169,820,392.24/513,841.20 - Step 6: Final answer
x = 734,020.20
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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.