Finding the Fourth Proportional to 1,498,340.80, 2,246,812.45 and 778,489
Calculator
Solution
The fourth proportional to 1,498,340.80, 2,246,812.45 and 778,489 is: 1,167,370.45
Step by Step Solution
- Step 1: Write the proportion equation
1,498,340.80 : 2,246,812.45 = 778,489 : x - Step 2: Convert to fraction form
1,498,340.80/2,246,812.45 = 778,489/x - Step 3: Cross multiply
1,498,340.80x = 2,246,812.45 × 778,489 - Step 4: Simplify right side
1,498,340.80x = 1,749,118,777,388.05 - Step 5: Solve for x
x = 1,749,118,777,388.05/1,498,340.80 - Step 6: Final answer
x = 1,167,370.45
Related Problems
Find fourth proportional to 749,170.40, 1,123,406.23 and 389,244.50
Half scale
Find fourth proportional to 2,996,681.60, 4,493,624.90 and 1,556,978
Double scale
Find fourth proportional to 1,498,341.80, 2,246,813.95 and 778,490
Similar ratio
Find fourth proportional to 2,247,511.20, 3,370,218.68 and 1,167,733.50
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.