Finding the Fourth Proportional to 358,877,862.30, 538,316,793.45 and 86,248,629.30
Calculator
Solution
The fourth proportional to 358,877,862.30, 538,316,793.45 and 86,248,629.30 is: 129,372,943.95
Step by Step Solution
- Step 1: Write the proportion equation
358,877,862.30 : 538,316,793.45 = 86,248,629.30 : x - Step 2: Convert to fraction form
358,877,862.30/538,316,793.45 = 86,248,629.30/x - Step 3: Cross multiply
358,877,862.30x = 538,316,793.45 × 86,248,629.30 - Step 4: Simplify right side
358,877,862.30x = 46,429,085,564,233,720 - Step 5: Solve for x
x = 46,429,085,564,233,720/358,877,862.30 - Step 6: Final answer
x = 129,372,943.95
Related Problems
Find fourth proportional to 179,438,931.15, 269,158,396.73 and 43,124,314.65
Half scale
Find fourth proportional to 717,755,724.60, 1,076,633,586.90 and 172,497,258.60
Double scale
Find fourth proportional to 358,877,863.30, 538,316,794.95 and 86,248,630.30
Similar ratio
Find fourth proportional to 538,316,793.45, 807,475,190.18 and 129,372,943.95
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.