Finding the Fourth Proportional to 406,723,642.29, 561,278,987.96 and 221,084,657.91
Calculator
Solution
The fourth proportional to 406,723,642.29, 561,278,987.96 and 221,084,657.91 is: 305,097,024.47
Step by Step Solution
- Step 1: Write the proportion equation
406,723,642.29 : 561,278,987.96 = 221,084,657.91 : x - Step 2: Convert to fraction form
406,723,642.29/561,278,987.96 = 221,084,657.91/x - Step 3: Cross multiply
406,723,642.29x = 561,278,987.96 × 221,084,657.91 - Step 4: Simplify right side
406,723,642.29x = 124,090,173,044,102,192 - Step 5: Solve for x
x = 124,090,173,044,102,192/406,723,642.29 - Step 6: Final answer
x = 305,097,024.47
Related Problems
Find fourth proportional to 203,361,821.15, 280,639,493.98 and 110,542,328.96
Half scale
Find fourth proportional to 813,447,284.58, 1,122,557,975.91 and 442,169,315.82
Double scale
Find fourth proportional to 406,723,643.29, 561,278,989.34 and 221,084,658.91
Similar ratio
Find fourth proportional to 610,085,463.44, 841,918,481.93 and 331,626,986.87
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.