Finding the Fourth Proportional to 383,490.37, 530,173.25 and 287,830.99
Calculator
Solution
The fourth proportional to 383,490.37, 530,173.25 and 287,830.99 is: 397,924.70
Step by Step Solution
- Step 1: Write the proportion equation
383,490.37 : 530,173.25 = 287,830.99 : x - Step 2: Convert to fraction form
383,490.37/530,173.25 = 287,830.99/x - Step 3: Cross multiply
383,490.37x = 530,173.25 × 287,830.99 - Step 4: Simplify right side
383,490.37x = 152,600,291,419.02 - Step 5: Solve for x
x = 152,600,291,419.02/383,490.37 - Step 6: Final answer
x = 397,924.70
Related Problems
Find fourth proportional to 191,745.19, 265,086.63 and 143,915.50
Half scale
Find fourth proportional to 766,980.74, 1,060,346.50 and 575,661.98
Double scale
Find fourth proportional to 383,491.37, 530,174.63 and 287,831.99
Similar ratio
Find fourth proportional to 575,235.56, 795,259.88 and 431,746.49
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.