Finding the Third Proportional to 279,674,438 and 423,395,877
Calculator
Solution
The third proportional to 279,674,438 and 423,395,877 is: 640,974,090.96
Step by Step Solution
- Step 1: Write the proportion equation
279,674,438 : 423,395,877 = 423,395,877 : x - Step 2: Convert to fraction form
279,674,438/423,395,877 = 423,395,877/x - Step 3: Cross multiply
279,674,438x = 423,395,877 × 423,395,877 - Step 4: Simplify right side
279,674,438x = 179,264,068,660,599,136 - Step 5: Solve for x
x = 179,264,068,660,599,136/279,674,438 - Step 6: Final answer
x = 640,974,090.96
Related Problems
Find third proportional to 139,837,219 and 211,697,938.50
Half scale
Find third proportional to 559,348,876 and 846,791,754
Double scale
Find third proportional to 279,674,440 and 423,395,880
Similar ratio
Find third proportional to 419,511,657 and 635,093,815.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.