Finding the Fourth Proportional to 875,178.80, 1,207,971.46 and 570,015.62
Calculator
Solution
The fourth proportional to 875,178.80, 1,207,971.46 and 570,015.62 is: 786,767.92
Step by Step Solution
- Step 1: Write the proportion equation
875,178.80 : 1,207,971.46 = 570,015.62 : x - Step 2: Convert to fraction form
875,178.80/1,207,971.46 = 570,015.62/x - Step 3: Cross multiply
875,178.80x = 1,207,971.46 × 570,015.62 - Step 4: Simplify right side
875,178.80x = 688,562,600,714.21 - Step 5: Solve for x
x = 688,562,600,714.21/875,178.80 - Step 6: Final answer
x = 786,767.92
Related Problems
Find fourth proportional to 437,589.40, 603,985.73 and 285,007.81
Half scale
Find fourth proportional to 1,750,357.60, 2,415,942.92 and 1,140,031.24
Double scale
Find fourth proportional to 875,179.80, 1,207,972.84 and 570,016.62
Similar ratio
Find fourth proportional to 1,312,768.20, 1,811,957.19 and 855,023.43
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.