Finding the Fourth Proportional to 648,291.08, 971,932.99 and 420,104.66
Calculator
Solution
The fourth proportional to 648,291.08, 971,932.99 and 420,104.66 is: 629,830.63
Step by Step Solution
- Step 1: Write the proportion equation
648,291.08 : 971,932.99 = 420,104.66 : x - Step 2: Convert to fraction form
648,291.08/971,932.99 = 420,104.66/x - Step 3: Cross multiply
648,291.08x = 971,932.99 × 420,104.66 - Step 4: Simplify right side
648,291.08x = 408,313,578,306.73 - Step 5: Solve for x
x = 408,313,578,306.73/648,291.08 - Step 6: Final answer
x = 629,830.63
Related Problems
Find fourth proportional to 324,145.54, 485,966.50 and 210,052.33
Half scale
Find fourth proportional to 1,296,582.16, 1,943,865.98 and 840,209.32
Double scale
Find fourth proportional to 648,292.08, 971,934.49 and 420,105.66
Similar ratio
Find fourth proportional to 972,436.62, 1,457,899.49 and 630,156.99
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.