Finding the Fourth Proportional to 742,322.79, 1,113,262.07 and 387,143.06
Calculator
Solution
The fourth proportional to 742,322.79, 1,113,262.07 and 387,143.06 is: 580,598.74
Step by Step Solution
- Step 1: Write the proportion equation
742,322.79 : 1,113,262.07 = 387,143.06 : x - Step 2: Convert to fraction form
742,322.79/1,113,262.07 = 387,143.06/x - Step 3: Cross multiply
742,322.79x = 1,113,262.07 × 387,143.06 - Step 4: Simplify right side
742,322.79x = 430,991,676,859.71 - Step 5: Solve for x
x = 430,991,676,859.71/742,322.79 - Step 6: Final answer
x = 580,598.74
Related Problems
Find fourth proportional to 371,161.40, 556,631.03 and 193,571.53
Half scale
Find fourth proportional to 1,484,645.58, 2,226,524.13 and 774,286.11
Double scale
Find fourth proportional to 742,323.79, 1,113,263.56 and 387,144.06
Similar ratio
Find fourth proportional to 1,113,484.19, 1,669,893.10 and 580,714.58
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.