Finding the Fourth Proportional to 409,471,930.80, 614,207,896.20 and 133,122,610.80
Calculator
Solution
The fourth proportional to 409,471,930.80, 614,207,896.20 and 133,122,610.80 is: 199,683,916.20
Step by Step Solution
- Step 1: Write the proportion equation
409,471,930.80 : 614,207,896.20 = 133,122,610.80 : x - Step 2: Convert to fraction form
409,471,930.80/614,207,896.20 = 133,122,610.80/x - Step 3: Cross multiply
409,471,930.80x = 614,207,896.20 × 133,122,610.80 - Step 4: Simplify right side
409,471,930.80x = 81,764,958,716,119,408 - Step 5: Solve for x
x = 81,764,958,716,119,408/409,471,930.80 - Step 6: Final answer
x = 199,683,916.20
Related Problems
Find fourth proportional to 204,735,965.40, 307,103,948.10 and 66,561,305.40
Half scale
Find fourth proportional to 818,943,861.60, 1,228,415,792.40 and 266,245,221.60
Double scale
Find fourth proportional to 409,471,931.80, 614,207,897.70 and 133,122,611.80
Similar ratio
Find fourth proportional to 614,207,896.20, 921,311,844.30 and 199,683,916.20
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.