Finding the Fourth Proportional to 982,903.20, 1,474,355.28 and 272,931.12
Calculator
Solution
The fourth proportional to 982,903.20, 1,474,355.28 and 272,931.12 is: 409,396.81
Step by Step Solution
- Step 1: Write the proportion equation
982,903.20 : 1,474,355.28 = 272,931.12 : x - Step 2: Convert to fraction form
982,903.20/1,474,355.28 = 272,931.12/x - Step 3: Cross multiply
982,903.20x = 1,474,355.28 × 272,931.12 - Step 4: Simplify right side
982,903.20x = 402,397,437,848.31 - Step 5: Solve for x
x = 402,397,437,848.31/982,903.20 - Step 6: Final answer
x = 409,396.81
Related Problems
Find fourth proportional to 491,451.60, 737,177.64 and 136,465.56
Half scale
Find fourth proportional to 1,965,806.40, 2,948,710.56 and 545,862.24
Double scale
Find fourth proportional to 982,904.20, 1,474,356.78 and 272,932.12
Similar ratio
Find fourth proportional to 1,474,354.80, 2,211,532.92 and 409,396.68
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.