Finding the Fourth Proportional to 629,857,205.60, 944,785,808.40 and 424,272,207.20
Calculator
Solution
The fourth proportional to 629,857,205.60, 944,785,808.40 and 424,272,207.20 is: 636,408,310.80
Step by Step Solution
- Step 1: Write the proportion equation
629,857,205.60 : 944,785,808.40 = 424,272,207.20 : x - Step 2: Convert to fraction form
629,857,205.60/944,785,808.40 = 424,272,207.20/x - Step 3: Cross multiply
629,857,205.60x = 944,785,808.40 × 424,272,207.20 - Step 4: Simplify right side
629,857,205.60x = 400,846,360,261,104,256 - Step 5: Solve for x
x = 400,846,360,261,104,256/629,857,205.60 - Step 6: Final answer
x = 636,408,310.80
Related Problems
Find fourth proportional to 314,928,602.80, 472,392,904.20 and 212,136,103.60
Half scale
Find fourth proportional to 1,259,714,411.20, 1,889,571,616.80 and 848,544,414.40
Double scale
Find fourth proportional to 629,857,206.60, 944,785,809.90 and 424,272,208.20
Similar ratio
Find fourth proportional to 944,785,808.40, 1,417,178,712.60 and 636,408,310.80
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.