Finding the Fourth Proportional to 448,068.78, 618,329.70 and 257,112.09
Calculator
Solution
The fourth proportional to 448,068.78, 618,329.70 and 257,112.09 is: 354,811.69
Step by Step Solution
- Step 1: Write the proportion equation
448,068.78 : 618,329.70 = 257,112.09 : x - Step 2: Convert to fraction form
448,068.78/618,329.70 = 257,112.09/x - Step 3: Cross multiply
448,068.78x = 618,329.70 × 257,112.09 - Step 4: Simplify right side
448,068.78x = 158,980,041,476.07 - Step 5: Solve for x
x = 158,980,041,476.07/448,068.78 - Step 6: Final answer
x = 354,811.69
Related Problems
Find fourth proportional to 224,034.39, 309,164.85 and 128,556.05
Half scale
Find fourth proportional to 896,137.56, 1,236,659.40 and 514,224.18
Double scale
Find fourth proportional to 448,069.78, 618,331.08 and 257,113.09
Similar ratio
Find fourth proportional to 672,103.17, 927,494.55 and 385,668.14
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.