Finding the Fourth Proportional to 742,678.23, 1,024,935.62 and 420,460.23
Calculator
Solution
The fourth proportional to 742,678.23, 1,024,935.62 and 420,460.23 is: 580,257.57
Step by Step Solution
- Step 1: Write the proportion equation
742,678.23 : 1,024,935.62 = 420,460.23 : x - Step 2: Convert to fraction form
742,678.23/1,024,935.62 = 420,460.23/x - Step 3: Cross multiply
742,678.23x = 1,024,935.62 × 420,460.23 - Step 4: Simplify right side
742,678.23x = 430,944,664,418.09 - Step 5: Solve for x
x = 430,944,664,418.09/742,678.23 - Step 6: Final answer
x = 580,257.57
Related Problems
Find fourth proportional to 371,339.12, 512,467.81 and 210,230.12
Half scale
Find fourth proportional to 1,485,356.46, 2,049,871.23 and 840,920.46
Double scale
Find fourth proportional to 742,679.23, 1,024,937 and 420,461.23
Similar ratio
Find fourth proportional to 1,114,017.35, 1,537,403.42 and 630,690.35
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.