Finding the Fourth Proportional to 646,565,041.80, 969,847,562.70 and 283,767,985.80
Calculator
Solution
The fourth proportional to 646,565,041.80, 969,847,562.70 and 283,767,985.80 is: 425,651,978.70
Step by Step Solution
- Step 1: Write the proportion equation
646,565,041.80 : 969,847,562.70 = 283,767,985.80 : x - Step 2: Convert to fraction form
646,565,041.80/969,847,562.70 = 283,767,985.80/x - Step 3: Cross multiply
646,565,041.80x = 969,847,562.70 × 283,767,985.80 - Step 4: Simplify right side
646,565,041.80x = 275,211,689,400,418,240 - Step 5: Solve for x
x = 275,211,689,400,418,240/646,565,041.80 - Step 6: Final answer
x = 425,651,978.70
Related Problems
Find fourth proportional to 323,282,520.90, 484,923,781.35 and 141,883,992.90
Half scale
Find fourth proportional to 1,293,130,083.60, 1,939,695,125.40 and 567,535,971.60
Double scale
Find fourth proportional to 646,565,042.80, 969,847,564.20 and 283,767,986.80
Similar ratio
Find fourth proportional to 969,847,562.70, 1,454,771,344.05 and 425,651,978.70
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.