Finding the Fourth Proportional to 445,826,738.40, 668,740,107.60 and 417,128,924.40
Calculator
Solution
The fourth proportional to 445,826,738.40, 668,740,107.60 and 417,128,924.40 is: 625,693,386.60
Step by Step Solution
- Step 1: Write the proportion equation
445,826,738.40 : 668,740,107.60 = 417,128,924.40 : x - Step 2: Convert to fraction form
445,826,738.40/668,740,107.60 = 417,128,924.40/x - Step 3: Cross multiply
445,826,738.40x = 668,740,107.60 × 417,128,924.40 - Step 4: Simplify right side
445,826,738.40x = 278,950,841,786,328,256 - Step 5: Solve for x
x = 278,950,841,786,328,256/445,826,738.40 - Step 6: Final answer
x = 625,693,386.60
Related Problems
Find fourth proportional to 222,913,369.20, 334,370,053.80 and 208,564,462.20
Half scale
Find fourth proportional to 891,653,476.80, 1,337,480,215.20 and 834,257,848.80
Double scale
Find fourth proportional to 445,826,739.40, 668,740,109.10 and 417,128,925.40
Similar ratio
Find fourth proportional to 668,740,107.60, 1,003,110,161.40 and 625,693,386.60
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.