Finding the Fourth Proportional to 553,537.80, 763,954.74 and 311,867.01
Calculator
Solution
The fourth proportional to 553,537.80, 763,954.74 and 311,867.01 is: 430,417.36
Step by Step Solution
- Step 1: Write the proportion equation
553,537.80 : 763,954.74 = 311,867.01 : x - Step 2: Convert to fraction form
553,537.80/763,954.74 = 311,867.01/x - Step 3: Cross multiply
553,537.80x = 763,954.74 × 311,867.01 - Step 4: Simplify right side
553,537.80x = 238,252,280,539.13 - Step 5: Solve for x
x = 238,252,280,539.13/553,537.80 - Step 6: Final answer
x = 430,417.36
Related Problems
Find fourth proportional to 276,768.90, 381,977.37 and 155,933.51
Half scale
Find fourth proportional to 1,107,075.60, 1,527,909.48 and 623,734.02
Double scale
Find fourth proportional to 553,538.80, 763,956.12 and 311,868.01
Similar ratio
Find fourth proportional to 830,306.70, 1,145,932.11 and 467,800.52
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.