Finding the Fourth Proportional to 1,420,209.18, 1,959,878.70 and 775,629.54
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Solution
The fourth proportional to 1,420,209.18, 1,959,878.70 and 775,629.54 is: 1,070,363.32
Step by Step Solution
- Step 1: Write the proportion equation
1,420,209.18 : 1,959,878.70 = 775,629.54 : x - Step 2: Convert to fraction form
1,420,209.18/1,959,878.70 = 775,629.54/x - Step 3: Cross multiply
1,420,209.18x = 1,959,878.70 × 775,629.54 - Step 4: Simplify right side
1,420,209.18x = 1,520,139,814,536.80 - Step 5: Solve for x
x = 1,520,139,814,536.80/1,420,209.18 - Step 6: Final answer
x = 1,070,363.32
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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.