Finding the Fourth Proportional to 538,276.80, 742,929.55 and 308,989.08
Calculator
Solution
The fourth proportional to 538,276.80, 742,929.55 and 308,989.08 is: 426,466.68
Step by Step Solution
- Step 1: Write the proportion equation
538,276.80 : 742,929.55 = 308,989.08 : x - Step 2: Convert to fraction form
538,276.80/742,929.55 = 308,989.08/x - Step 3: Cross multiply
538,276.80x = 742,929.55 × 308,989.08 - Step 4: Simplify right side
538,276.80x = 229,557,118,159.31 - Step 5: Solve for x
x = 229,557,118,159.31/538,276.80 - Step 6: Final answer
x = 426,466.68
Related Problems
Find fourth proportional to 269,138.40, 371,464.78 and 154,494.54
Half scale
Find fourth proportional to 1,076,553.60, 1,485,859.10 and 617,978.16
Double scale
Find fourth proportional to 538,277.80, 742,930.93 and 308,990.08
Similar ratio
Find fourth proportional to 807,415.20, 1,114,394.33 and 463,483.62
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.