Finding the Fourth Proportional to 1,209,252.16, 1,668,695.20 and 665,368
Calculator
Solution
The fourth proportional to 1,209,252.16, 1,668,695.20 and 665,368 is: 918,167.79
Step by Step Solution
- Step 1: Write the proportion equation
1,209,252.16 : 1,668,695.20 = 665,368 : x - Step 2: Convert to fraction form
1,209,252.16/1,668,695.20 = 665,368/x - Step 3: Cross multiply
1,209,252.16x = 1,668,695.20 × 665,368 - Step 4: Simplify right side
1,209,252.16x = 1,110,296,387,833.60 - Step 5: Solve for x
x = 1,110,296,387,833.60/1,209,252.16 - Step 6: Final answer
x = 918,167.79
Related Problems
Find fourth proportional to 604,626.08, 834,347.60 and 332,684
Half scale
Find fourth proportional to 2,418,504.32, 3,337,390.40 and 1,330,736
Double scale
Find fourth proportional to 1,209,253.16, 1,668,696.58 and 665,369
Similar ratio
Find fourth proportional to 1,813,878.24, 2,503,042.80 and 998,052
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.