Finding the Fourth Proportional to 629,861,490.40, 944,792,235.60 and 387,660,863.20
Calculator
Solution
The fourth proportional to 629,861,490.40, 944,792,235.60 and 387,660,863.20 is: 581,491,294.80
Step by Step Solution
- Step 1: Write the proportion equation
629,861,490.40 : 944,792,235.60 = 387,660,863.20 : x - Step 2: Convert to fraction form
629,861,490.40/944,792,235.60 = 387,660,863.20/x - Step 3: Cross multiply
629,861,490.40x = 944,792,235.60 × 387,660,863.20 - Step 4: Simplify right side
629,861,490.40x = 366,258,973,597,353,792 - Step 5: Solve for x
x = 366,258,973,597,353,792/629,861,490.40 - Step 6: Final answer
x = 581,491,294.80
Related Problems
Find fourth proportional to 314,930,745.20, 472,396,117.80 and 193,830,431.60
Half scale
Find fourth proportional to 1,259,722,980.80, 1,889,584,471.20 and 775,321,726.40
Double scale
Find fourth proportional to 629,861,491.40, 944,792,237.10 and 387,660,864.20
Similar ratio
Find fourth proportional to 944,792,235.60, 1,417,188,353.40 and 581,491,294.80
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.