Finding the Fourth Proportional to 788,977,991.45, 1,088,790,903.66 and 436,568,835.53
Calculator
Solution
The fourth proportional to 788,977,991.45, 1,088,790,903.66 and 436,568,835.53 is: 602,465,698.79
Step by Step Solution
- Step 1: Write the proportion equation
788,977,991.45 : 1,088,790,903.66 = 436,568,835.53 : x - Step 2: Convert to fraction form
788,977,991.45/1,088,790,903.66 = 436,568,835.53/x - Step 3: Cross multiply
788,977,991.45x = 1,088,790,903.66 × 436,568,835.53 - Step 4: Simplify right side
788,977,991.45x = 475,332,176,946,502,592 - Step 5: Solve for x
x = 475,332,176,946,502,592/788,977,991.45 - Step 6: Final answer
x = 602,465,698.79
Related Problems
Find fourth proportional to 394,488,995.73, 544,395,451.83 and 218,284,417.77
Half scale
Find fourth proportional to 1,577,955,982.90, 2,177,581,807.32 and 873,137,671.06
Double scale
Find fourth proportional to 788,977,992.45, 1,088,790,905.04 and 436,568,836.53
Similar ratio
Find fourth proportional to 1,183,466,987.18, 1,633,186,355.49 and 654,853,253.30
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.