Finding the Fourth Proportional to 1,492,879.80, 2,239,319.70 and 861,468.60
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Solution
The fourth proportional to 1,492,879.80, 2,239,319.70 and 861,468.60 is: 1,292,202.90
Step by Step Solution
- Step 1: Write the proportion equation
1,492,879.80 : 2,239,319.70 = 861,468.60 : x - Step 2: Convert to fraction form
1,492,879.80/2,239,319.70 = 861,468.60/x - Step 3: Cross multiply
1,492,879.80x = 2,239,319.70 × 861,468.60 - Step 4: Simplify right side
1,492,879.80x = 1,929,103,606,911.42 - Step 5: Solve for x
x = 1,929,103,606,911.42/1,492,879.80 - Step 6: Final answer
x = 1,292,202.90
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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.