Finding the Fourth Proportional to 579,443,816.70, 869,165,725.05 and 443,394,920.70
Calculator
Solution
The fourth proportional to 579,443,816.70, 869,165,725.05 and 443,394,920.70 is: 665,092,381.05
Step by Step Solution
- Step 1: Write the proportion equation
579,443,816.70 : 869,165,725.05 = 443,394,920.70 : x - Step 2: Convert to fraction form
579,443,816.70/869,165,725.05 = 443,394,920.70/x - Step 3: Cross multiply
579,443,816.70x = 869,165,725.05 × 443,394,920.70 - Step 4: Simplify right side
579,443,816.70x = 385,383,667,733,702,720 - Step 5: Solve for x
x = 385,383,667,733,702,720/579,443,816.70 - Step 6: Final answer
x = 665,092,381.05
Related Problems
Find fourth proportional to 289,721,908.35, 434,582,862.53 and 221,697,460.35
Half scale
Find fourth proportional to 1,158,887,633.40, 1,738,331,450.10 and 886,789,841.40
Double scale
Find fourth proportional to 579,443,817.70, 869,165,726.55 and 443,394,921.70
Similar ratio
Find fourth proportional to 869,165,725.05, 1,303,748,587.58 and 665,092,381.05
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.