Finding the Fourth Proportional to 745,983,990.40, 1,118,975,985.60 and 698,208,246.40
Calculator
Solution
The fourth proportional to 745,983,990.40, 1,118,975,985.60 and 698,208,246.40 is: 1,047,312,369.60
Step by Step Solution
- Step 1: Write the proportion equation
745,983,990.40 : 1,118,975,985.60 = 698,208,246.40 : x - Step 2: Convert to fraction form
745,983,990.40/1,118,975,985.60 = 698,208,246.40/x - Step 3: Cross multiply
745,983,990.40x = 1,118,975,985.60 × 698,208,246.40 - Step 4: Simplify right side
745,983,990.40x = 781,278,260,669,487,616 - Step 5: Solve for x
x = 781,278,260,669,487,616/745,983,990.40 - Step 6: Final answer
x = 1,047,312,369.60
Related Problems
Find fourth proportional to 372,991,995.20, 559,487,992.80 and 349,104,123.20
Half scale
Find fourth proportional to 1,491,967,980.80, 2,237,951,971.20 and 1,396,416,492.80
Double scale
Find fourth proportional to 745,983,991.40, 1,118,975,987.10 and 698,208,247.40
Similar ratio
Find fourth proportional to 1,118,975,985.60, 1,678,463,978.40 and 1,047,312,369.60
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.