Finding the Fourth Proportional to 778,672.20, 1,168,336.35 and 423,940.80
Calculator
Solution
The fourth proportional to 778,672.20, 1,168,336.35 and 423,940.80 is: 636,089.80
Step by Step Solution
- Step 1: Write the proportion equation
778,672.20 : 1,168,336.35 = 423,940.80 : x - Step 2: Convert to fraction form
778,672.20/1,168,336.35 = 423,940.80/x - Step 3: Cross multiply
778,672.20x = 1,168,336.35 × 423,940.80 - Step 4: Simplify right side
778,672.20x = 495,305,446,888.08 - Step 5: Solve for x
x = 495,305,446,888.08/778,672.20 - Step 6: Final answer
x = 636,089.80
Related Problems
Find fourth proportional to 389,336.10, 584,168.18 and 211,970.40
Half scale
Find fourth proportional to 1,557,344.40, 2,336,672.70 and 847,881.60
Double scale
Find fourth proportional to 778,673.20, 1,168,337.85 and 423,941.80
Similar ratio
Find fourth proportional to 1,168,008.30, 1,752,504.53 and 635,911.20
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.