Finding the Fourth Proportional to 749,640,140.60, 1,124,564,837.70 and 312,840,699.80
Calculator
Solution
The fourth proportional to 749,640,140.60, 1,124,564,837.70 and 312,840,699.80 is: 469,304,712.68
Step by Step Solution
- Step 1: Write the proportion equation
749,640,140.60 : 1,124,564,837.70 = 312,840,699.80 : x - Step 2: Convert to fraction form
749,640,140.60/1,124,564,837.70 = 312,840,699.80/x - Step 3: Cross multiply
749,640,140.60x = 1,124,564,837.70 × 312,840,699.80 - Step 4: Simplify right side
749,640,140.60x = 351,809,650,796,541,440 - Step 5: Solve for x
x = 351,809,650,796,541,440/749,640,140.60 - Step 6: Final answer
x = 469,304,712.68
Related Problems
Find fourth proportional to 374,820,070.30, 562,282,418.85 and 156,420,349.90
Half scale
Find fourth proportional to 1,499,280,281.20, 2,249,129,675.40 and 625,681,399.60
Double scale
Find fourth proportional to 749,640,141.60, 1,124,564,839.20 and 312,840,700.80
Similar ratio
Find fourth proportional to 1,124,460,210.90, 1,686,847,256.55 and 469,261,049.70
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.