Finding the Fourth Proportional to 874,670.20, 1,312,005.30 and 313,631.80
Calculator
Solution
The fourth proportional to 874,670.20, 1,312,005.30 and 313,631.80 is: 470,447.70
Step by Step Solution
- Step 1: Write the proportion equation
874,670.20 : 1,312,005.30 = 313,631.80 : x - Step 2: Convert to fraction form
874,670.20/1,312,005.30 = 313,631.80/x - Step 3: Cross multiply
874,670.20x = 1,312,005.30 × 313,631.80 - Step 4: Simplify right side
874,670.20x = 411,486,583,848.54 - Step 5: Solve for x
x = 411,486,583,848.54/874,670.20 - Step 6: Final answer
x = 470,447.70
Related Problems
Find fourth proportional to 437,335.10, 656,002.65 and 156,815.90
Half scale
Find fourth proportional to 1,749,340.40, 2,624,010.60 and 627,263.60
Double scale
Find fourth proportional to 874,671.20, 1,312,006.80 and 313,632.80
Similar ratio
Find fourth proportional to 1,312,005.30, 1,968,007.95 and 470,447.70
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.