Finding the Fourth Proportional to 513,571.68, 770,355.36 and 139,593.60
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Solution
The fourth proportional to 513,571.68, 770,355.36 and 139,593.60 is: 209,389.81
Step by Step Solution
- Step 1: Write the proportion equation
513,571.68 : 770,355.36 = 139,593.60 : x - Step 2: Convert to fraction form
513,571.68/770,355.36 = 139,593.60/x - Step 3: Cross multiply
513,571.68x = 770,355.36 × 139,593.60 - Step 4: Simplify right side
513,571.68x = 107,536,677,981.70 - Step 5: Solve for x
x = 107,536,677,981.70/513,571.68 - Step 6: Final answer
x = 209,389.81
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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.