Finding the Fourth Proportional to 499,983.66, 689,960.43 and 285,193.26
Calculator
Solution
The fourth proportional to 499,983.66, 689,960.43 and 285,193.26 is: 393,556.99
Step by Step Solution
- Step 1: Write the proportion equation
499,983.66 : 689,960.43 = 285,193.26 : x - Step 2: Convert to fraction form
499,983.66/689,960.43 = 285,193.26/x - Step 3: Cross multiply
499,983.66x = 689,960.43 × 285,193.26 - Step 4: Simplify right side
499,983.66x = 196,772,064,302.70 - Step 5: Solve for x
x = 196,772,064,302.70/499,983.66 - Step 6: Final answer
x = 393,556.99
Related Problems
Find fourth proportional to 249,991.83, 344,980.22 and 142,596.63
Half scale
Find fourth proportional to 999,967.32, 1,379,920.86 and 570,386.52
Double scale
Find fourth proportional to 499,984.66, 689,961.81 and 285,194.26
Similar ratio
Find fourth proportional to 749,975.49, 1,034,940.65 and 427,789.89
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.