Finding the Fourth Proportional to 919,110.30, 1,378,708.65 and 288,044.70
Calculator
Solution
The fourth proportional to 919,110.30, 1,378,708.65 and 288,044.70 is: 432,080.59
Step by Step Solution
- Step 1: Write the proportion equation
919,110.30 : 1,378,708.65 = 288,044.70 : x - Step 2: Convert to fraction form
919,110.30/1,378,708.65 = 288,044.70/x - Step 3: Cross multiply
919,110.30x = 1,378,708.65 × 288,044.70 - Step 4: Simplify right side
919,110.30x = 397,129,719,476.66 - Step 5: Solve for x
x = 397,129,719,476.66/919,110.30 - Step 6: Final answer
x = 432,080.59
Related Problems
Find fourth proportional to 459,555.15, 689,354.33 and 144,022.35
Half scale
Find fourth proportional to 1,838,220.60, 2,757,417.30 and 576,089.40
Double scale
Find fourth proportional to 919,111.30, 1,378,710.15 and 288,045.70
Similar ratio
Find fourth proportional to 1,378,665.45, 2,068,062.98 and 432,067.05
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.