Finding the Fourth Proportional to 859,967.80, 1,289,951.70 and 806,823.70
Calculator
Solution
The fourth proportional to 859,967.80, 1,289,951.70 and 806,823.70 is: 1,210,235.55
Step by Step Solution
- Step 1: Write the proportion equation
859,967.80 : 1,289,951.70 = 806,823.70 : x - Step 2: Convert to fraction form
859,967.80/1,289,951.70 = 806,823.70/x - Step 3: Cross multiply
859,967.80x = 1,289,951.70 × 806,823.70 - Step 4: Simplify right side
859,967.80x = 1,040,763,603,415.29 - Step 5: Solve for x
x = 1,040,763,603,415.29/859,967.80 - Step 6: Final answer
x = 1,210,235.55
Related Problems
Find fourth proportional to 429,983.90, 644,975.85 and 403,411.85
Half scale
Find fourth proportional to 1,719,935.60, 2,579,903.40 and 1,613,647.40
Double scale
Find fourth proportional to 859,968.80, 1,289,953.20 and 806,824.70
Similar ratio
Find fourth proportional to 1,289,951.70, 1,934,927.55 and 1,210,235.55
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.