Finding the Fourth Proportional to 790,275,289.12, 1,090,579,898.88 and 442,594,777.12
Calculator
Solution
The fourth proportional to 790,275,289.12, 1,090,579,898.88 and 442,594,777.12 is: 610,780,792.37
Step by Step Solution
- Step 1: Write the proportion equation
790,275,289.12 : 1,090,579,898.88 = 442,594,777.12 : x - Step 2: Convert to fraction form
790,275,289.12/1,090,579,898.88 = 442,594,777.12/x - Step 3: Cross multiply
790,275,289.12x = 1,090,579,898.88 × 442,594,777.12 - Step 4: Simplify right side
790,275,289.12x = 482,684,967,276,345,792 - Step 5: Solve for x
x = 482,684,967,276,345,792/790,275,289.12 - Step 6: Final answer
x = 610,780,792.37
Related Problems
Find fourth proportional to 395,137,644.56, 545,289,949.44 and 221,297,388.56
Half scale
Find fourth proportional to 1,580,550,578.24, 2,181,159,797.76 and 885,189,554.24
Double scale
Find fourth proportional to 790,275,290.12, 1,090,579,900.26 and 442,594,778.12
Similar ratio
Find fourth proportional to 1,185,412,933.68, 1,635,869,848.32 and 663,892,165.68
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.