Finding the Fourth Proportional to 487,220.70, 730,831.05 and 319,259.10
Calculator
Solution
The fourth proportional to 487,220.70, 730,831.05 and 319,259.10 is: 478,888.65
Step by Step Solution
- Step 1: Write the proportion equation
487,220.70 : 730,831.05 = 319,259.10 : x - Step 2: Convert to fraction form
487,220.70/730,831.05 = 319,259.10/x - Step 3: Cross multiply
487,220.70x = 730,831.05 × 319,259.10 - Step 4: Simplify right side
487,220.70x = 233,324,463,275.06 - Step 5: Solve for x
x = 233,324,463,275.06/487,220.70 - Step 6: Final answer
x = 478,888.65
Related Problems
Find fourth proportional to 243,610.35, 365,415.53 and 159,629.55
Half scale
Find fourth proportional to 974,441.40, 1,461,662.10 and 638,518.20
Double scale
Find fourth proportional to 487,221.70, 730,832.55 and 319,260.10
Similar ratio
Find fourth proportional to 730,831.05, 1,096,246.58 and 478,888.65
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.