Finding the Fourth Proportional to 912,393.76, 1,368,502.98 and 281,138.08
Calculator
Solution
The fourth proportional to 912,393.76, 1,368,502.98 and 281,138.08 is: 421,680.11
Step by Step Solution
- Step 1: Write the proportion equation
912,393.76 : 1,368,502.98 = 281,138.08 : x - Step 2: Convert to fraction form
912,393.76/1,368,502.98 = 281,138.08/x - Step 3: Cross multiply
912,393.76x = 1,368,502.98 × 281,138.08 - Step 4: Simplify right side
912,393.76x = 384,738,300,271.48 - Step 5: Solve for x
x = 384,738,300,271.48/912,393.76 - Step 6: Final answer
x = 421,680.11
Related Problems
Find fourth proportional to 456,196.88, 684,251.49 and 140,569.04
Half scale
Find fourth proportional to 1,824,787.52, 2,737,005.96 and 562,276.16
Double scale
Find fourth proportional to 912,394.76, 1,368,504.48 and 281,139.08
Similar ratio
Find fourth proportional to 1,368,590.64, 2,052,754.47 and 421,707.12
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.