Finding the Fourth Proportional to 472,393,939.20, 708,590,908.80 and 324,440,764.80
Calculator
Solution
The fourth proportional to 472,393,939.20, 708,590,908.80 and 324,440,764.80 is: 486,661,147.20
Step by Step Solution
- Step 1: Write the proportion equation
472,393,939.20 : 708,590,908.80 = 324,440,764.80 : x - Step 2: Convert to fraction form
472,393,939.20/708,590,908.80 = 324,440,764.80/x - Step 3: Cross multiply
472,393,939.20x = 708,590,908.80 × 324,440,764.80 - Step 4: Simplify right side
472,393,939.20x = 229,895,776,381,399,040 - Step 5: Solve for x
x = 229,895,776,381,399,040/472,393,939.20 - Step 6: Final answer
x = 486,661,147.20
Related Problems
Find fourth proportional to 236,196,969.60, 354,295,454.40 and 162,220,382.40
Half scale
Find fourth proportional to 944,787,878.40, 1,417,181,817.60 and 648,881,529.60
Double scale
Find fourth proportional to 472,393,940.20, 708,590,910.30 and 324,440,765.80
Similar ratio
Find fourth proportional to 708,590,908.80, 1,062,886,363.20 and 486,661,147.20
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.