Finding the Fourth Proportional to 784,973.18, 1,083,431.80 and 478,984.00
Calculator
Solution
The fourth proportional to 784,973.18, 1,083,431.80 and 478,984.00 is: 661,100.93
Step by Step Solution
- Step 1: Write the proportion equation
784,973.18 : 1,083,431.80 = 478,984.00 : x - Step 2: Convert to fraction form
784,973.18/1,083,431.80 = 478,984.00/x - Step 3: Cross multiply
784,973.18x = 1,083,431.80 × 478,984.00 - Step 4: Simplify right side
784,973.18x = 518,946,497,212.79 - Step 5: Solve for x
x = 518,946,497,212.79/784,973.18 - Step 6: Final answer
x = 661,100.93
Related Problems
Find fourth proportional to 392,486.59, 541,715.90 and 239,492.00
Half scale
Find fourth proportional to 1,569,946.35, 2,166,863.60 and 957,968.00
Double scale
Find fourth proportional to 784,974.18, 1,083,433.18 and 478,985
Similar ratio
Find fourth proportional to 1,177,459.77, 1,625,147.70 and 718,476.00
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.