Finding the Fourth Proportional to 489,031.40, 732,380.70 and 239,421.80
Calculator
Solution
The fourth proportional to 489,031.40, 732,380.70 and 239,421.80 is: 358,561.65
Step by Step Solution
- Step 1: Write the proportion equation
489,031.40 : 732,380.70 = 239,421.80 : x - Step 2: Convert to fraction form
489,031.40/732,380.70 = 239,421.80/x - Step 3: Cross multiply
489,031.40x = 732,380.70 × 239,421.80 - Step 4: Simplify right side
489,031.40x = 175,347,905,479.26 - Step 5: Solve for x
x = 175,347,905,479.26/489,031.40 - Step 6: Final answer
x = 358,561.65
Related Problems
Find fourth proportional to 244,515.70, 366,190.35 and 119,710.90
Half scale
Find fourth proportional to 978,062.80, 1,464,761.40 and 478,843.60
Double scale
Find fourth proportional to 489,032.40, 732,382.20 and 239,422.80
Similar ratio
Find fourth proportional to 733,547.10, 1,098,571.05 and 359,132.70
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.