Finding the Fourth Proportional to 785,639,351.05, 1,178,550,201.99 and 261,055,268.55
Calculator
Solution
The fourth proportional to 785,639,351.05, 1,178,550,201.99 and 261,055,268.55 is: 391,613,198.95
Step by Step Solution
- Step 1: Write the proportion equation
785,639,351.05 : 1,178,550,201.99 = 261,055,268.55 : x - Step 2: Convert to fraction form
785,639,351.05/1,178,550,201.99 = 261,055,268.55/x - Step 3: Cross multiply
785,639,351.05x = 1,178,550,201.99 × 261,055,268.55 - Step 4: Simplify right side
785,639,351.05x = 307,666,739,481,148,224 - Step 5: Solve for x
x = 307,666,739,481,148,224/785,639,351.05 - Step 6: Final answer
x = 391,613,198.95
Related Problems
Find fourth proportional to 392,819,675.52, 589,275,101.00 and 130,527,634.28
Half scale
Find fourth proportional to 1,571,278,702.10, 2,357,100,403.99 and 522,110,537.10
Double scale
Find fourth proportional to 785,639,352.05, 1,178,550,203.49 and 261,055,269.55
Similar ratio
Find fourth proportional to 1,178,459,026.57, 1,767,825,302.99 and 391,582,902.83
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.