Finding the Fourth Proportional to 850,824,315.70, 1,276,236,473.55 and 728,380,309.30
Calculator
Solution
The fourth proportional to 850,824,315.70, 1,276,236,473.55 and 728,380,309.30 is: 1,092,570,463.95
Step by Step Solution
- Step 1: Write the proportion equation
850,824,315.70 : 1,276,236,473.55 = 728,380,309.30 : x - Step 2: Convert to fraction form
850,824,315.70/1,276,236,473.55 = 728,380,309.30/x - Step 3: Cross multiply
850,824,315.70x = 1,276,236,473.55 × 728,380,309.30 - Step 4: Simplify right side
850,824,315.70x = 929,585,517,344,290,176 - Step 5: Solve for x
x = 929,585,517,344,290,176/850,824,315.70 - Step 6: Final answer
x = 1,092,570,463.95
Related Problems
Find fourth proportional to 425,412,157.85, 638,118,236.78 and 364,190,154.65
Half scale
Find fourth proportional to 1,701,648,631.40, 2,552,472,947.10 and 1,456,760,618.60
Double scale
Find fourth proportional to 850,824,316.70, 1,276,236,475.05 and 728,380,310.30
Similar ratio
Find fourth proportional to 1,276,236,473.55, 1,914,354,710.33 and 1,092,570,463.95
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.