Finding the Fourth Proportional to 395,449,619.20, 593,174,428.80 and 266,119,187.20
Calculator
Solution
The fourth proportional to 395,449,619.20, 593,174,428.80 and 266,119,187.20 is: 399,178,780.80
Step by Step Solution
- Step 1: Write the proportion equation
395,449,619.20 : 593,174,428.80 = 266,119,187.20 : x - Step 2: Convert to fraction form
395,449,619.20/593,174,428.80 = 266,119,187.20/x - Step 3: Cross multiply
395,449,619.20x = 593,174,428.80 × 266,119,187.20 - Step 4: Simplify right side
395,449,619.20x = 157,855,096,860,080,256 - Step 5: Solve for x
x = 157,855,096,860,080,256/395,449,619.20 - Step 6: Final answer
x = 399,178,780.80
Related Problems
Find fourth proportional to 197,724,809.60, 296,587,214.40 and 133,059,593.60
Half scale
Find fourth proportional to 790,899,238.40, 1,186,348,857.60 and 532,238,374.40
Double scale
Find fourth proportional to 395,449,620.20, 593,174,430.30 and 266,119,188.20
Similar ratio
Find fourth proportional to 593,174,428.80, 889,761,643.20 and 399,178,780.80
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.