Finding the Fourth Proportional to 784,850,415.20, 1,177,275,622.80 and 768,726,101.60
Calculator
Solution
The fourth proportional to 784,850,415.20, 1,177,275,622.80 and 768,726,101.60 is: 1,153,089,152.40
Step by Step Solution
- Step 1: Write the proportion equation
784,850,415.20 : 1,177,275,622.80 = 768,726,101.60 : x - Step 2: Convert to fraction form
784,850,415.20/1,177,275,622.80 = 768,726,101.60/x - Step 3: Cross multiply
784,850,415.20x = 1,177,275,622.80 × 768,726,101.60 - Step 4: Simplify right side
784,850,415.20x = 905,002,500,023,756,032 - Step 5: Solve for x
x = 905,002,500,023,756,032/784,850,415.20 - Step 6: Final answer
x = 1,153,089,152.40
Related Problems
Find fourth proportional to 392,425,207.60, 588,637,811.40 and 384,363,050.80
Half scale
Find fourth proportional to 1,569,700,830.40, 2,354,551,245.60 and 1,537,452,203.20
Double scale
Find fourth proportional to 784,850,416.20, 1,177,275,624.30 and 768,726,102.60
Similar ratio
Find fourth proportional to 1,177,275,622.80, 1,765,913,434.20 and 1,153,089,152.40
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.