Finding the Fourth Proportional to 368,412,390.52, 508,453,680.72 and 209,681,106.70
Calculator
Solution
The fourth proportional to 368,412,390.52, 508,453,680.72 and 209,681,106.70 is: 289,385,300.88
Step by Step Solution
- Step 1: Write the proportion equation
368,412,390.52 : 508,453,680.72 = 209,681,106.70 : x - Step 2: Convert to fraction form
368,412,390.52/508,453,680.72 = 209,681,106.70/x - Step 3: Cross multiply
368,412,390.52x = 508,453,680.72 × 209,681,106.70 - Step 4: Simplify right side
368,412,390.52x = 106,613,130,479,058,048 - Step 5: Solve for x
x = 106,613,130,479,058,048/368,412,390.52 - Step 6: Final answer
x = 289,385,300.88
Related Problems
Find fourth proportional to 184,206,195.26, 254,226,840.36 and 104,840,553.35
Half scale
Find fourth proportional to 736,824,781.04, 1,016,907,361.44 and 419,362,213.40
Double scale
Find fourth proportional to 368,412,391.52, 508,453,682.10 and 209,681,107.70
Similar ratio
Find fourth proportional to 552,618,585.78, 762,680,521.08 and 314,521,660.05
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.