Finding the Fourth Proportional to 434,439,277.20, 651,690,408.60 and 261,543,805.20
Calculator
Solution
The fourth proportional to 434,439,277.20, 651,690,408.60 and 261,543,805.20 is: 392,334,667.29
Step by Step Solution
- Step 1: Write the proportion equation
434,439,277.20 : 651,690,408.60 = 261,543,805.20 : x - Step 2: Convert to fraction form
434,439,277.20/651,690,408.60 = 261,543,805.20/x - Step 3: Cross multiply
434,439,277.20x = 651,690,408.60 × 261,543,805.20 - Step 4: Simplify right side
434,439,277.20x = 170,445,589,277,586,816 - Step 5: Solve for x
x = 170,445,589,277,586,816/434,439,277.20 - Step 6: Final answer
x = 392,334,667.29
Related Problems
Find fourth proportional to 217,219,638.60, 325,845,204.30 and 130,771,902.60
Half scale
Find fourth proportional to 868,878,554.40, 1,303,380,817.20 and 523,087,610.40
Double scale
Find fourth proportional to 434,439,278.20, 651,690,410.10 and 261,543,806.20
Similar ratio
Find fourth proportional to 651,658,915.80, 977,535,612.90 and 392,315,707.80
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.