Finding the Fourth Proportional to 915,310.99, 1,373,195.09 and 645,964.84
Calculator
Solution
The fourth proportional to 915,310.99, 1,373,195.09 and 645,964.84 is: 969,108.59
Step by Step Solution
- Step 1: Write the proportion equation
915,310.99 : 1,373,195.09 = 645,964.84 : x - Step 2: Convert to fraction form
915,310.99/1,373,195.09 = 645,964.84/x - Step 3: Cross multiply
915,310.99x = 1,373,195.09 × 645,964.84 - Step 4: Simplify right side
915,310.99x = 887,035,746,600.64 - Step 5: Solve for x
x = 887,035,746,600.64/915,310.99 - Step 6: Final answer
x = 969,108.59
Related Problems
Find fourth proportional to 457,655.50, 686,597.55 and 322,982.42
Half scale
Find fourth proportional to 1,830,621.98, 2,746,390.18 and 1,291,929.68
Double scale
Find fourth proportional to 915,311.99, 1,373,196.59 and 645,965.84
Similar ratio
Find fourth proportional to 1,372,966.49, 2,059,792.64 and 968,947.26
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.