Finding the Fourth Proportional to 986,507.59, 1,479,812.42 and 312,660.49
Calculator
Solution
The fourth proportional to 986,507.59, 1,479,812.42 and 312,660.49 is: 469,006.91
Step by Step Solution
- Step 1: Write the proportion equation
986,507.59 : 1,479,812.42 = 312,660.49 : x - Step 2: Convert to fraction form
986,507.59/1,479,812.42 = 312,660.49/x - Step 3: Cross multiply
986,507.59x = 1,479,812.42 × 312,660.49 - Step 4: Simplify right side
986,507.59x = 462,678,876,345.29 - Step 5: Solve for x
x = 462,678,876,345.29/986,507.59 - Step 6: Final answer
x = 469,006.91
Related Problems
Find fourth proportional to 493,253.80, 739,906.21 and 156,330.25
Half scale
Find fourth proportional to 1,973,015.18, 2,959,624.84 and 625,320.98
Double scale
Find fourth proportional to 986,508.59, 1,479,813.92 and 312,661.49
Similar ratio
Find fourth proportional to 1,479,761.39, 2,219,718.63 and 468,990.74
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.