Finding the Fourth Proportional to 10,366,361.80, 15,549,542.70 and 7,712,153.80
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Solution
The fourth proportional to 10,366,361.80, 15,549,542.70 and 7,712,153.80 is: 11,568,230.70
Step by Step Solution
- Step 1: Write the proportion equation
10,366,361.80 : 15,549,542.70 = 7,712,153.80 : x - Step 2: Convert to fraction form
10,366,361.80/15,549,542.70 = 7,712,153.80/x - Step 3: Cross multiply
10,366,361.80x = 15,549,542.70 × 7,712,153.80 - Step 4: Simplify right side
10,366,361.80x = 119,920,464,822,067.25 - Step 5: Solve for x
x = 119,920,464,822,067.25/10,366,361.80 - Step 6: Final answer
x = 11,568,230.70
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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.