Finding the Fourth Proportional to 909,328.78, 1,363,992.94 and 310,289.91
Calculator
Solution
The fourth proportional to 909,328.78, 1,363,992.94 and 310,289.91 is: 465,434.79
Step by Step Solution
- Step 1: Write the proportion equation
909,328.78 : 1,363,992.94 = 310,289.91 : x - Step 2: Convert to fraction form
909,328.78/1,363,992.94 = 310,289.91/x - Step 3: Cross multiply
909,328.78x = 1,363,992.94 × 310,289.91 - Step 4: Simplify right side
909,328.78x = 423,233,246,593.24 - Step 5: Solve for x
x = 423,233,246,593.24/909,328.78 - Step 6: Final answer
x = 465,434.79
Related Problems
Find fourth proportional to 454,664.39, 681,996.47 and 155,144.96
Half scale
Find fourth proportional to 1,818,657.56, 2,727,985.88 and 620,579.82
Double scale
Find fourth proportional to 909,329.78, 1,363,994.44 and 310,290.91
Similar ratio
Find fourth proportional to 1,363,993.17, 2,045,989.41 and 465,434.87
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.